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Combinations of bait and spray were tested against susceptible and field-collected German cockroaches, Blattella germanica. In exposure tests, residual deposits of all sprays were lethal to a susceptible strain, but pyrethrin and certain pyrethroid sprays were repellent in choice boxes. Indoxacarb b...

The growing concern of consumers about the use of traditional insecticides has increased need for development of safe, effective, and natural insecticides and repellents. Plant extracts containing essential oils have been used for centuries to kill and repel a variety of insect pests including cockr...

The Asian cockroach, Mizukubo, was discovered in large numbers in southeast Alabama in 2003. We surveyed southern Alabama and Georgia to determine the distribution of this species. We found that was established in 7 counties in Georgia and 8 counties in Alabama. Basic ecology and behavior studies we...

Modern bait formulations have been used successfully to control infestations of the German cockroach, Blattella germanica (L.) since the mid 1980s. Because of the slow-acting insecticides used in most bait formulations, unmetabolized insecticide may be excreted in the feces and oral secretions, and ...

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 ...

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...

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...

A modified Ebeling choice box was designed to evaluate the repellency of moving ambient air to American, Periplaneta americana (L.), German, Blattella germanica (L.), and smokybrown, Periplaneta fuliginosa (Serville), cockroaches using air velocities of 0 - 4.75 m/s. The modified choice box tested t...

German cockroaches (Blattella germanica (L.)) are known to be susceptible to infection by the entomopathogenic nematode, Steinernema carpocapaue (Weiser) (Koehler el. al., 1992). Nematodes placed on moist filter paper in petri dishes (50 nematodes per cm2) killed all adult cockroaches after 3 days o...

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...