Evaluation of Insecticides for Cat Flea Control Inside Urban Dwellings, 1982

Abstract

Abstract The residual control of cat fleas indoors with Dursban LO, Ficam W, Knox Out, Safrotin and some mixtures with insect growth regulator Precor was evaluated in apartments and single family dwellings in coastal areas of southern California. Residences with active flea infestations were obtained through the cooperation of Western Exterminator Company. Residences where studies were made were surveyed 24 h before treatment and 30 and 60 days post-treatment. Pretreatment and posttreatment counts were obtained with a Hoover Portapower vacuum cleaner modified with a special cloth filter attachment inserted in the collection hose. Fleas could be readily vacuumed from accessible floor space, including carpets and bare floors. Filters with fleas and debris were placed into plastic bags that were sealed and were returned to the laboratory to be evaluated. The contents were carefully examined and adult fleas unable to jump or crawl were considered to be moribund. Although larvae and dead adult fleas were occasionally collected, only living adult fleas were counted. Treatments were applied by professionals at 40 psi from a B & G compression sprayer equipped with a coarse fan nozzle. Ficam and Knox Out were applied at approximately 3.8 liters of finish spray/74m2 (1 gal/800ft2) while Dursban and Safrotin were applied at 1.9 liters/74m2. About 0.8ml of Precor was mixed with 3.8 liters of Safrotin and Knox Out and applied at the above rates. Safrotin provided excellent residual control for at least 60 days and the lowest percentage of complaints within 30 days after treatment. Even though Knox Out also provided excellent residual control, residents frequently mentioned the lack of rapid activity and the odor within 2-3 wk after treatment. The addition of 0.8 ml Precor per 3.8 liters of Safrotin or Knox Out did not appear to enhance their performance at 30 and 60 days. Ficam did not provide satisfactory control of cat fleas and all the residences needed another treatment within 2 wk.