Effect of propoxur-impregnated pesticide tape on mouse cholinesterase levels.

Mice housed in polycarbonate cages, either with or without fiberglass filter bonnets, were exposed to propoxur-impregnated tape for 2 hours, 24 hours, or 7 days. Both erythrocyte and serum cholinesterase levels were determined at each time point. Body weights were also measured. There was no change in body weight or serum cholinesterase level. Erythrocyte cholinesterase level showed significant decrease, related to increasing length of exposure.