Efficacy of contaminated cockroach gel baits on Blattella germanica

Gel baits are commonly used in the control of cockroaches; however, gel bait efficacy can be compromised when contaminated by cleaning products. Choice experiments using dog food and a gel bait (Advion, Maxforce FC Magnum, Maxforce FC Select, Maxforce FC, or Vendetta) were conducted to determine palatability and efficacy of gel baits contaminated by cleaning products. Mid-instar Daytona bait-averse strain German cockroaches were placed into arenas with harborage and water and starved for 24 h. Cockroaches were then provided with a choice between pre-weighed dog food and contaminated or uncontaminated gel bait. After 24 h, dog food and gel bait were re-weighed. Mean consumption of gel bait was calculated and mortality was taken at 1, 2, 3, 5, 9 and 14 days after treatment.