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Insecticidal baits are proven effective tactics for domestic cockroach species, but limited information about their use and efficacy exist for outdoor applications targeting peridomestic species. We evaluated three commercial bait products against large populations of Turkestan cockroaches at two pu...

Two new technologies (spray with a pheromone adjuvant + biodegradable hydrogel bait delivery method) were used to develop a unique IPM protocol for Argentine ant at urban structural settings. The IPM protocol included a one-time perimeter treatment with 0.03% fipronil (mixed with a pheromone adjuvan...

Outdoor areas were monitored for two pestiferous species of yellowjackets, Vespula alascensis Packard and Vespula pensylvanica Saussure (Hymenoptera: Vespidae), in southern and northern California. Heptyl butyrate attracted V. acadica (Sladen), V. alascensis, V. atropilosa (Sladen), and V. pensylvan...

The intrinsic activity of combinations of methoprene and chlorfluazuron and methoprene and fipronil was determined against larval cat fleas, Ctenochephalides felis (Bouché). Methoprene synergized the activity of the IGR chlorfluazuron and the adulticide fipronil. The LC50s of chlorfluazuron, fiproni...

Treatment strategies focused on reducing the amount of fipronil applied and the amount fipronil and its metabolites detected in the water runoff. Directed applications around the perimeter of the structure, narrow pin-stream applications, and no spray zones reduced the amount of fipronil detected. A...

Invasive ants present a serious threat to humans, wildlife and sensitive environmental habitats. The nature of these sensitive sites such as schools, nursing homes, parks, and zoos prevent the widespread application of insecticides to control ants and encourage alternative strategies. The presence o...

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 ...

The Argentine ant, Linepithema humile (Mayr), is a worldwide agricultural and urban pest of Mediterranean and subtropical climates. They often displace native ant species when introduced into new areas. The Argentine ant is a tramp species that easily adapts to new environments and lives in close as...

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...

Urban entomology has grown dramatically in the last 25 years and has attained a disciplinary status within the entomological and pest management community. As urban centers have grown throughout the world, the importance of the control of arthropods and insects associated with humans and their struc...

The cat flea, Ctenocephalides felis (Bouché), is a seasonal ectoparasite of domestic and feral mammals worldwide. Adult fleas are generally most abundant during the warm spring and summer months, becoming scarce or absent during the cold winter months. However, reinfestations of unknown origin are c...

The California ground squirrel, Spermophilus beecheyi (Richardson), is a reservoir of bubonic plague throughout most of its range. Three species of fleas occur on these animals; Oropsylla montana (Baker), Hoplopsyllus anomalus (Baker), and the sticktight flea, Echidnophaga gallinacea (Westwood). Des...