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Wood samples from spruce (Picea abies) and pine (Pinus sylvestris) even in dry state are susceptible to biological degradation. Preservation against insects, termites in exposed conditions is conventionally achieved by impregnating the wood with pesticides applied in professional processes. Solution...
PiedPiper was born out of the desire to move rodenticide control away from the current multi-feed technology that leads to toxin resistant rats and mice. Our approach was to develop a single application methodology that would prevent the protracted times to death and also avoid the increase in toler...
Extracts of the exuviae of nymphal bed bugs (Cimex lectularius) were analysed for volatile compounds that might contribute to arrestment of adult bed bugs. Four volatile aldehydes, (E)-2-hexenal, 4-oxo-(E)-2-hexenal, (E)-2-octenal, and 4-oxo-(E)-2-octenal were consistently detected in the headspace ...
Current solvents used for the application of insecticides include: kerosene, diesel fuel, and aliphatic and naphthenic hydrocarbon-based molecules. These solvents are toxic and, due to their flash points, create fire hazards. The insecticides are environmental and public health risks. This study spe...
The preparative form of concentrated emulsion continues to enjoy the greatest demand among professionals conducting insecticide treatments. In comparison with a lot of concentrates in organic solvents, aqueous concentrates, which are not so widely represented in the market of insecticides, are simil...
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 (...
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...
This study compares the responses of termites to the lignin-degrading basidiomycete, Marasmiellus troyanus (Murrill) Singer, grown on different substrates, and examines the tunneling behavior of termites in sand treated with extracts of fungus-infected pure lignin versus solvent-treated sand. Termit...
The high level of resistance to organophosphate and pyrethroid insecticides by German cockroaches is due to multiple factors, including the scheduled use of them, and isolated populations. Resistance in field populations have been observed in some Mexican strains, in which control failure with cyper...
Increasing concerns about the presence of storage mites in food, and their medical importance in domestic and occupational environments, have been addressed by the development at this laboratory of two new techniques. This poster outlines these techniques and presents examples of results obtained wh...
During the early 1990s the Medical Entomology Centre, Cambridge, received an increasing number of reports from concerned health professionals of treatments against head lice failing to cure. Preliminary investigations showed some lice to have developed tolerance of pyrethroid insecticides. A series ...
House dust mites are one of the main reasons for allergies which makes an efficient control necessary. The commonly used compounds are pyrethrins, pyrethroids but also compounds as benzyl benzoate. Furthermore the acaricidal effects of some solvents (e.g. propylenglycol, diethylenglycolmonobutylethe...
We explored decontamination measures which would minimise risk of exposure. Decontamination and cleaning methods were chosen according to the structure of treated surface area and the properties of the active compound. Commercial cleaning agents were used to decontaminate areas treated with insectic...
The utility of pheromone enhanced ant baits was investigated using fire ants as the model organism. The enhanced bait consisted of hydramethylnon (active ingredient), soybean oil (phagostimulant and Ai solvent), defatted corn grit (carrier), and 'invictolide', a component of the fire ant queen recog...
Insecticidal space sprays are widely and effectively used for control of insects in the urban environment. They are especially useful for flying insect control, be it for disease vector or nuisance pest, but space sprays can also be very effective for rapid control of crawling pests such as cockroac...
Resistance to organochlorine, organophosphorous (OP) and carbamate insecticides in the German cockroach Blattella germanica has been documented for many years. In the past, significant bendiocarb resistance has been reported in the United Kingdom. More recently, resistance has been reported to the p...