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Insecticidal baits are one of the most popular tools for controlling cockroaches. They rely on precise label dosage guidelines to achieve control for a varied number of cockroach species. Periplaneta americana can consume high quantities of bait before being incapacitated. This has the potential for...

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 ...

Cockroaches are of the great importance in public health. Blattella germanica is the main specie that infests commercial kitchens and industrial kitchens, due to conditions for their development. One of the methods to control B. germanica is the use of insecticides in the gel bait formulation. The o...

Silverfish (Lepisma saccarinum) are described as a pest to museum and paper objects and mainly occur in damp and humid conditions. They can damage paper, starchy materials, wall paper, but in some cases also insect collections and textiles. The firebrat (Thermobia domesticum) is also described in th...

The Public Health Agency of Barcelona (ASPB Catalan acronym) is in charge of the surveillance and control of pests, such as cockroaches, in public areas and sewage system of the City. As in other Mediterranean cities, Periplaneta americana has colonized the sewage system of Barcelona in last years, ...

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...

Solid food carried into nests of ants by foraging workers is reported to be fed to larvae for digestion before nutrients are transmitted back to workers. The role of the digestion of solid food by larvae for worker consumption was investigated in the use of gel and granular baits in the management o...

Gel bait treatments are widely used for cockroach control, in part because they are considered to be safer and more effective than other methods. However, commercially available baits are considered to have a limited range over which they can attract and, as a result, fail to lure cockroaches out of...

This poster will report on development of a new cockroach gel bait formulation based on the active ingredient clothianidin. We will review research conducted to establish a minimum effective concentration for clothianidin in the formulation that is necessary to kill cockroaches. A series of trials w...

The aim of this work was to evaluated to a minimal dose and minimal lethal time of Fipronil and Hydramethylnone bait gel formulation at a concentration of 0.05 and 2.15%. The insects were food deprived during 24 hours and after confined individually with the respective dose of the gel, water and foo...

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 ...

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...

The urban environment provides conditions for the establishment and spread of some species of ants, known as tramp ant species. They can occur in many environments, including hospitals, industrial and domestic kitchens, acting as carriers of pathogenic organisms. The most effective method of control...

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....

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...

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...

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...

Secondary kill of the German cockroach, Blattella germanica (L)., by baits was reported to increase the overall control efficacy of bait products. However, most studies have been based on laboratory strains and small nymphs. We compared the secondary kill of four cockroach gel baits against various ...

Baiting offers an integral tool in the management of ants. Baiting trials with Camponotus modoc were successful in 55% of field trials with two granular, three gel, and two containerized baits in 2005-2007. Results with two granular, three gel, and four containerized baits in laboratory trials yield...

Choice experiments determined sucrose bait base preference by using laboratory colonies of 10 species of urban pest ants, namely Monomorium pharaonis (L.), Monomorium floricola (Jerdon), Monomorium destructor (Jerdon), Monomorium orientale Mayr, Tapinoma indicum (Forel), Tapinoma melanocephalum (Fab...

Rattus rattus is considered to have a less omnivorous diet than R. norvegicus, preferring fruit, seeds and grains. Therefore, the efficacy of existing commercial (Sorex) difenacoum rodenticide bait formulations against R. rattus was uncertain and studies were undertaken to determine their efficacy. ...

Chronic cockroach infestations, high cockroach allergen levels, and repeated insecticide use is a serious health concern among low-income residents living in multi-family housing. Surveys in 358 randomly selected apartments in Gary, Indiana in 2006 revealed that 30% of the apartments were infested w...

German cockroach is the most common pest of urban, low-income housing and is associated with high pesticide use by residents. Cockroach allergen is implicated in asthma exacerbation and initiation and in the growing social and medical aspects of the disease. A safe and secure home environment is an ...

Three experimental gel matrices containing indoxacarb and three market-leading Maxforce gels containing either fipronil or hydramethylnon were evaluated and the roles of active ingredients and bait bases in the bait performance were examined against both lab susceptible and bait averse strains of Ge...

Commercial gel bait formulations, including two new formulations of indoxacarb (0.6% AI; RG2V3 and DPX411), were evaluated for efficacy against a "bait averse" strain of German cockroaches (Saginaw strain). Bait consumption and subsequent mortality of the Saginaw cockroaches were compared with that ...

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...

Insecticide resistance in insects is a well-documented phenomenon that is equally related to toxicology and evolutionary biology. Insecticide resistance in the German cockroach has a long history dating back over 60 years. Thus, the recent evolution of gel bait aversion resistance is but one example...

Bait aversion has recently resurfaced, approximately six to ten years after the first known case of bait aversion (glucose aversion) was corrected. Anecdotal reports from Pest Management Professionals have indicated poor acceptance and control failures on commercial cockroach gel baits since late 19...

Indoxacarb, with a novel mode of action, is in a new class of chemistry called Oxadiazines. The compound was registered in the United States in 1999 for agricultural uses and Dupont Professional Products is developing the compound for new uses in the Structural Pest Control industry. One of the firs...

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...

Carpenter ants are major structural pests in the United States, Canada, and Scandinavian countries. With the advent of non-repellent chemicals and more attractive baits, shifts have occurred in management strategies that include either perimeter sprays or baiting as the sole method for control. Four...

Shape and characteristics in five domiciliary cockroach-feces Feces of domiciliary cockroaches often contaminate food or medicine packages. The presence of feces in foraging places is evidence of a cockroach infestation. The shape and other characteristics of feces differ among species. When they fe...

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...

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 ...

Carpenter ants, Camponotusspp., are major structural pests as well as nuisance pests in northern areas of the United States, southern Canada, and northern Europe. Management tools have included cultural controls to modify habitats and foraging, dust applications to wall voids, perimeter sprays, bait...

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...

Experimental gel and powder bait formulations containing 0.25, 0.5, and 1.0% Indoxacarb were evaluated in a series of laboratory and field studies against the German cockroach,Blattella germanica (L.). Mortality was first determined in 18 by 31 by 10 cm plastic boxes with loosely fitting covers. Twe...

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...

Field strain male German cockroaches,Blattella germanica (L.), considered “resistant” to fipronil by standard topical application methodology, were found to readily consume a novel 0.03% fipronil gel bait and succumb. Although a simple method, valid for contact sprays or residual deposits, topical a...

Insecticidal activities of noviflumuron formulated as dust, gel, and suspension concentrate (SC) were evaluated against the German cockroach, Blattella germanica (L.), in the laboratory and in apartments. In laboratory studies conducted in large cockroach arenas (1 m2 boxes), population reductions a...

Speed of control in cockroach field trials with bait products often seems to vary inexplicably by region. An investigation was run on a variety of field strains to determine whether temperature and strain differences are factors involved in speed of performance. Regional strains from a variety of so...

Necrophagy was shown to provide efficient transfer of fipronil toxicity from poisoned oriental cockroach (Blatta orientalis(L.)) cadavers to groups of untreated cockroaches in laboratory experiments. Adult females poisoned with Goliath gel deposits of 0.1 - 40 mg 0.05% w/w a.i. formulation were indi...

Combining methods for cockroach control is often prevented by the perception that gel baits are easily contaminated by other insecticides. The objectives were to determine the ability of liquid and dust insecticides to contaminate a cockroach control bait. A gel bait (Maxforce, 2.15% hydramethylnon)...

The aim of this study was to investigate food bait preference in Blattella germanica (L.) cockroaches in relation to age and to compare their feeding preferences in several choice situations. Food choice presents two components: attractiveness measured by food type eaten first and feeding stimulatio...

Over the last decade there has been a steady growth in the use of insecticidal baits to control cockroaches, particularly since the development of slow-acting, non-repellent compounds such as hydramethylnon and, most recently, fipronil. These baits have become increasingly popular for a number of re...

Many synanthropic species of insects occur in households and other domestic situations. Some of these pests are very well known to inhabitants, e.g. ants, silverfish or cockroaches. While small insects, such as psocids, are often overlooked. Synanthropic species of psocids (especially from the gener...

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 application of conventional insecticides within the confines of a secure establishment in a safe manner can cause many logistical and managerial problems. Therefore, alternative methods of insecticide applications have to be sought. The advent of insecticidal gels with varying modes of action gi...

The regular and effective control of some synanthropic crawling insects as cockroaches and ants is unavoidable but due to the requirements of human health and environment protection, their elimination needs new concepts and methods. Cockroaches, first of all the German cockroach Blattella germanica ...

Inter-strain variation of German cockroaches in response to several commercial baits and their potential to develop resistance to the baits was investigated. Late instars were given a choice between the bait and an alternate food source (dog chow). Survivors were saved and choice tests repeated. Tes...

Four simulated domestic environments were each infested with mixed populations (3,300 insects) of German cockroaches (Blattella germanica). The simulated domestic environments (containers) were maintained at 25°C and 45% r.h. and cockroaches were fed and watered ad lib. After an acclimation period o...

Cockroaches settling down in various sanitary trade institutions, industrial establishments as well as in residential buildings may spread potential infectious diseases and allergy or - through their disgust provoking effect - may disturb people living or working there. As a consequence, regular con...

Patented Film Forming Aqueous Spray Technology or 'FFAST' has been used to develop AquaPy, a water based product containing synergised pyrethrins for use in the control of public health and hygiene pests. This product is highly flexible and can be applied undiluted through Ultra Low Volume (ULV) spr...

Commercial formulations of avermectin based baits were evaluated in laboratory and field studies against the German cockroach, Blattella germanica (L.). In continuous exposure tests with adult males, LT50s ranged from ca. 2.5 to >200d for Roach Ender and an experimental aerosol gel formulation, r...

During the first two days of laboratory trials, catches on sticky traps (Ekolex-V) of the German cockroach (Blarrella germmica) were higher than those of subsequent days. In the case of sexed groups of adults, catches of the first and second days ranged from 14.2 to 28.3%. Consecutive daily catches ...