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Insecticide resistance in the German cockroach, Blattella germanica (L.), is a significant challenge affecting pest management professionals worldwide. The use of gel baits against German cockroaches has become a popular option in Asia. However, recently, there were anecdotal reports that the field ...

Microcerotermes diversus (Silvestri) (Isoptera: Termitidae) is a major species of termites that attacks cellulosic materials and is an economically important pest, damaging buildings in Khuzestan Province (Iran). Neonicotinoids, most notably imidacloprid, have recently been introduced for pest contr...

The control of Blattella germanica represents a major challenge for Brazilian PCOs (Pest Control Operators), due to their great capacity for reproduction and dispersal on tropical weather environments. Several gel bait insecticides have been developed and sold in Brazil, during the past few years, f...

Periplaneta americana and Blattella germanica are pests of great importance in urban areas, mainly due to their role as vectors of pathogens and capability of causing allergies. The interspecific differences between these cockroaches can lead to different results in their control. No chemical (liqui...

To investigate insecticide resistance in modern field populations of bed bugs in Australia, a program to collect and screen field specimens was initiated. Thirty-five bed bug strains (a mixture that included both C. lectularius and C. hemipterus) were collected from across Australian and subsequentl...

The Invasive Garden Ant, Lasius neglectus, was first recognised in Europe in 1990, and has now been recorded from at least ten European countries. It was first found in the UK in 2009 in Hidcote Manor Garden, Gloucestershire, UK, where the ant is believed to have been present for several decades. A ...

We report the results achieved in laboratory tests conducted to compare the efficacy and the attractiveness of commercial gel formulations, containing abamectin, fipronil, indoxacarb, acetamiprid and imidacloprid, for the control of nymphs and adults of cockroaches. The tests were replicated 4 times...

As part of a study investigating experimental insecticide formulations for control of Argentine ants, Linepithema humile (Mayr), in outdoor locations, the imidacloprid-based product Premise 2 (Bayer Environmental Science) was used as a commercial standard. During the study, Premise 2 provided the mo...

Insecticide resistance in bed bugs (Cimex lectularius L. and C. hemipterus F.) is a major factor in the pest’s resurgence. Various studies have demonstrated resistance to the pyrethroids, carbamates and the organophosphates. Resistance has been suspected in Australia, with anecdotal reports of poor ...

In this study, we examined the resistance status of six field-collected strains from Singapore to eight insecticides, as well as the resistance of the parental through F5 generations after they were selected with indoxacarb bait. All strains showed no resistance to acetamiprid (0.7–1.9x), imidaclopr...

Ants are social insects that can be found almost in every terrestrial environment around the world. As in natural environment, the artificial environments are excellent places to install nests, but when installed in human habitations they are considered urban pests, because of the inconvenience caus...

An experiment was conducted to evaluate the knockdown effect and effectiveness of imidacloprid 21% + betacyfluthrin 10.5% to control bed bug in laboratory conditions. During the experiment the temperature was ± 2 27oC, relative humidity 66% ± 5 and photoperiod of 12 hours. Imidacloprid 21% + betacyf...

Gel baits are easy to incorporate in pest management programs because they present properties like low toxicity, less environmental risk than sprays, easy handling and proved effectivity. Active ingredients, Fipronil and Imidacloprid, act through ingestion and contact as neurotoxics. Fipronil, a phe...

Blattella germanica is considered one of the main pests found in commercial shops mainly foodstuff. Excessive use of insecticides, flaws in the applications of pyrethroid group insecticides, and failure on rotation of chemical groups, result in selection of resistant cockroaches populations, which i...

Arachnids are successful groups with a lifestyle based on predation, especially insects. The spiders have a body divided in two segments, the cephalothorax and abdomen, have four pairs of legs, chelicerae and pedipalps. The Loxosceles spiders occur throughout the world, in Brazil were recorded eight...

Control of adult roaches is usually not problematic as those life cycle stages are actively exploring the habitat for food sources. Nymphs are less mobile and therefore less likely to access a bait spot directly. Natural occurring populations of German cockroach (Blattella germanica L.) show a relat...

The bed bug Cimex lectularius L. is blood-feeding parasite of humans, bats and different domestic animals. In the early 1990s, pest management professionals began to see an increase in beg bug infestations across the world. Now the bed bug problem is very important in many countries, however, in Rus...

Baits (station, granule, gel and liquid) are widely used in the control of ant pests because of their effectiveness, ease of application, and their reduced risk to people, pets and the environment. Among the types of baits, gel baits are the most popular bait type for ant control. However, after app...

Optimisation of performance of dry flowable powder formulations for control of crawling insect pests is known to involve control of particle size and effective distribution of active ingredient. Enhanced pick-up by the insect cuticle has been demonstrated through use of powder bearing an electrostat...

Blattella germanica is a very important pest in homes, food service establishments and other structures in São Paulo city. The roach bait control is usually recommended. The aim this work was to evaluate the minimal dose of different active ingredients in bait commercial gel to B. germanica control....

Subterranean termites are important pests in the U.S. and many parts of the world. Most products available for subterranean termite control are registered in Florida and currently there are 76 products. Most are either repellent or non-repellent soil treatment products. In recent years the number of...

A novel semi-liquid ant bait matrix containing imidacloprid between 0.001 and 0.1% destroyed all laboratory colonies of Pharaoh’s ant in a dose related time span. Best performance was observed with concentrations ranging from 0.01 to 0.1% imidacloprid. Two concentrations (0.01 and 0.05%) were field ...

To minimize pesticide use and intrusion to homes, we evaluate the efficacy of an innovative limited interior perimeter plus external perimeter application of imidacloprid as an IPM option in post-construction termite control in a dilution of ratio 1:400. Seven private houses were chosen for the rese...

Multiyear studies describing the effects of tree size and initial infestation on efficacy of imidacloprid (Merit 75 WSP) soil drenches against emerald ash borer, Agrilus planipennis (Fairmaire), were initiated in spring 2004 at two locations in Michigan. Eighty-five green ash trees (Fraxinus pennsyl...

Tapinoma melanocephalum F. (Ghost Ant) infestations have increased in Western Europe. Generally, Ghost Ant infestations resemble those of Monomorium pharaonis (Pharaoh’s Ant) with a focus to older, multi-unit apartment blocks which offer a multitude of nesting opportunities and easy migration of ant...

Imidacloprid, acetamiprid, thiamethoxam and thiacloprid have the same mode of action. They are agonists the nicotinic acethylcholine receptor, affecting the synapses in the insect central nervous system. These insecticides are gaining widespread use for controlling urban insect pests in Russia. Four...

Comparative acute mosquito larvicidal activity of neonicotinoids in different formulations: acetamiprid (Mospilan, Aspid), imidacloprid (Confidor, Shanfidor), thiacloprid (Calipso), thiamethoxam (Actara, Agita) and pyrethroids: cypermethrin (Cifox), permethrin (Medifox – super) was studied in labora...

A fipronil SC formulation was evaluated against a multi-resistant population of Blattella germanica. The test site was an eight-story apartment building, with 150 individual apartments in Neratovice, Central Bohemia, Czech Republic. Conditions in the apartments included general disorder and an abund...

In the past years test systems for the evaluation of repellents, attractants and insecticides/acaricides have been developed and further refined in our laboratory. A standardized laboratory test system for the evaluation of tick repellents (Moving-Object (MO) Bioassay) has been extensively used with...

Seasonal and annual intensity of foraging pestiferous yellowjackets in California (USA) was determined with wet capture traps using heptyl butyrate (HB) lure. Although 3 species were sympatric at every test site, the most abundant at > 85 to 90% of total was V. pensylvanica (Saussure). There was ...

In fly control, the development of new insecticidal compounds with oral action encourages the development of baits. Imidacloprid, which belongs to the chloronicotinyl class of compounds, is most active when it is ingested and it is used in fly control as a granule for application as scatter bait (Qu...

This ongoing study in central North Carolina is making use of DNA technology (microsatellite genotyping) and long term monitoring to observe the immediate and prolonged effects of imidacloprid on subterranean termite colonies (Reticulitermes spp.) located inside and around residential structures. A ...

Imidacloprid, the active ingredient in Premise®, is a slow-acting, non-repellent termiticide used to control termites in residential and commercial applications. Workers acquire imidacloprid from contact with treated soil, and then transfer the AI among individuals throughout the colony. However, th...

Two spiders of possible medical importance in the Pacific Northwest were chosen for this study: the hobo spider, Tegenaria agrestis, male and female, and the black widow, Latrodectus hesperus, female. Three management strategies were investigated with chemicals applied to the substrate, spider webbi...

Five insecticide bait formulations have been evaluated for their attractiveness to adults of Brown-banded Cockroach, Supella longipalpa (F.) in laboratory trials. The gel formulations contained one of the following active ingredients (a.i.): hydramethylnon, imidacloprid, fipronil. Tests were carried...

American cockroaches, Periplaneta americana (L.), left undisturbed, often develop to enormous numbers and become major pests in sanitary sewers throughout much of the world. They are also domiciliary pests in many places, especially in southeast Asia. Moving from sewers, they often invade surroundin...

Neonicotinoids imidacloprid and thiamethoxam share a common mode of action. They are agonist of the nicotinic acetylcholine receptor, affecting the synapses in the central nervous system. These insecticides are gaining widespread use for controlling urban insect pests in Russia. They are insecticide...

Five natural and 16 synthetic compounds were evaluated for termiticidal activity against the Formosan subterranean termite, Coptotermes formosanus Shiraki (Isoptera: Rhinotermitidae). The naphthoquinones menadione, plumbagin, and juglone, and the benzoquinones thymoquinone, and coenzyme Q1 killed al...

Study on the efficacy of some soil termiticides available in Thailand market was made in order to evaluate their effectiveness to prevent the invasion of subterranean termites living underneath the buildings. Two methods representing construction practices widely used in the country were experimente...

A number of previous studies have reported superior levels of efficacy for slow-acting, non-repellent toxicants in laboratory simulations against drywood termites, but very little research has been conducted in naturally infested wood. We utilized boards naturally infested with Cryptotermes brevis (...

Fipronil and imidacloprid are non-repellant insecticides that work via direct contact and termite-to-termite transmission. This secondary form of transmission is more effective if termites continue functioning normally after they come in contact with the chemical. Behavioral changes in the Formosan ...

For more than 2 years, Bayer Corporation has worked with researchers and industry professionals to develop imidacloprid ant baits. Ant bait development has involved the input of many groups including research, marketing, formulation development, regulatory, packaging, and manufacturing. Imidacloprid...

The insecticide imidacloprid belongs to the chloronicotinyl class of compounds and is most active against insects when ingested (Leicht, 1993; Londershausen, 1996). Its use in fly control is seen as an important area of application. An imidacloprid-based fly bait that could be selectively applied in...

Evaluations were made of Bayer Compound PNR342 imidacloprid granular bait at 0.5% a.i., as compared to methomyl (Golden Malrin) granular bait for control of the house fly, Musca domestica L. Studies conducted included a laboratory caged study, bait trap evaluations in a commercial egglayer poultry f...

High palatability is an essential requirement for ant baits. They should not exhibit repellency and the ingredients need to be acceptable to the ant species. Since various ant species react differently to ingredients such as solvents, preservatives, or food in a bait, the determination of the palata...

The soil-applied termiticide, imidacloprid (Premise®, Hachikusan®) was registered for termite control in Japan in 1993. This non-repellent termiticide causes mortality in termites foraging near treated structures, and is transmissible to other termites not directly exposed to treated soil. A two-yea...

The odorous house ant, Tapinoma sessile (Say), is a severe pest of structures. We have investigated whether the use of liquid bait formulations is an effective strategy for control of this peripatetic, tramp-ant species. Sixteen homes or business establishments, located in or near Cape May, NJ, were...

The Formosan subterranean termite, Coptotermes formosanus Shiraki (Isoptera: Rhinotermitidae), is currently considered the most destructive insect in Louisiana. It attacks living trees eating the centers and constructing a carton nest within. Infested trees can serve as reservoirs for termites to in...

Argentine ants, Linepithema humile (Mayr), are a major urban pest species in many countries with Mediterranean and semi-tropical climates. L. humile primarily feeds on honeydew, nectar, and other liquid sweets. Baits consisting of sucrose solutions are highly preferred. Sucrose-based liquid solution...

Laboratory trials were done describing the primary and secondary kill ofBlattella germanica (L.) in response to MaxForce Gold, a new 0.03% AI fipronil-based cockroach bait. In bioassays measuring primary kill, MaxForce Gold at 0.1 g product/m2 caused ca. 90% mortality (14 DAT) of adult males and fem...

Eastern subterranean termites (Reticulitermes flavipes (Kollar)) were confined to sand of different pH levels, which was treated with either chlorpyrifos (10,000, 1,000, 100, or 10 ppm Dursban TC), imidacloprid (500, 50, 5, or 0.5 ppm Premise 2), fipronil (600, 60, 6, or 0.6 ppm Termidor), bifenthri...

The German cockroach, Blattella germanica (L.), is the most important cockroach pest in Russia. After WW II, the use of inorganic compounds — such as boric acid, sodium fluoride, and arsenic — for cockroach control decreased, and the use of organic insecticides — such as organochlorines, organophosp...

Field studies were conducted to compare the performance of a new formulation of Goliath® cockroach gel (0.3g/kg fipronil) to a range of other commercial cockroach gels. These were carried out in Sydney, NSW, Australia, against German cockroach, Blattella germanica (L), and in Cairns, Queensland, Aus...

Most manufacturers warn applicators to avoid contaminating cockroach baits with conventional aerosol or liquid insecticides. However, at least one study has concluded that small amounts of insecticides do not affect bait performance. In this study we use mint oil, a relatively nontoxic — yet highly ...

Imidacloprid belongs to a new group of insecticides, the chlorinated nicotine derivatives. It has been shown to have activity against a range of pests including termites, aphids, fleas, beetles and thrips. A gel formulation has been developed for use against cockroaches and this study examined the e...

An experimental 2.15% imidacloprid-based gel bait containing »44% water was evaluated in laboratory and field studies against the German cockroach, Blattella germanica (L.). In continuous exposure tests, toxicity and presumably bait consumption varied with cockroach stage, deprivation of competitive...

The Coastal Brown Ant (Pheidole megacephala) is a major introduced nuisance pest species in the most populated regions of Australia. The aim of this trial was to examine the potential of imidacloprid and triflumuron as active ingredients for ant baits. Baits based on peanut butter and the nitromethy...

No choice feeding tests, Reticulitermes flavipes (Kollar) weekly survival and feeding on two bait toxicants was compared for sound sweetgum blocks and those decayed by Gloeophyllum trabeum (Pers. ex Fr.) Murr. At 100 ppm, imidacloprid and sulfluramid showed promise for subterranean termite control. ...