Study Shows IPM and Baits More Effective Than Baits Alone
(Beyond Pesticides, June 22, 2006) A study published by researchers at Purdue University’s Center for Urban and Industrial Pest Management, Comparative Study of Integrated Pest Management and Baiting for German Cockroach Management in Public Housing, finds that the use of integrated pest management (IPM) practices (including vacuuming, sticky trap monitors, and resident education) and pesticide baits are more effective than programs that only use baits alone. The researchers conclude that the long-term costs are similar. The study group included 12 buildings (66 apartments), treated and monitored for cockroaches, over a seven month period. The study was published in the June 2006 issue of the journal of the Entomological Society of America 99(3):879-885.
At 29 weeks of study, only one apartment in the IPM group had a high level of cockroach infestation. In contrast, the apartments in the bait treatment group had high level infestations at 29 weeks based on overnight trapping counts. The authors conclude that IPM is a more sustainable method of population reduction. Sanitation levels in the IPM group significantly improved at week 29, compared with that at the beginning of the study. The sanitation levels in the bait treatment group remained similar throughout the experiment.
The authors conclude, “We expect that IPM will provide better control at similar cost compared with bait treatment beyond 29 week.” However, the study finds that the front end costs associated with the IPM program are greater, with median costs per apartment during the 29 weeks at $64.8 for IPM and $35.0 for bait treatment only. The median amount of bait used per apartment in the IPM and bait treatment was 45.0 and 50.0 g, respectively.