Apr 09, 2013 - 09:54 PM
Depending on what you are treating for, Viper insecticide may or may not be the best product to use. Viper contains "cypermethrin", one of the hottest and fastest acting synthetic pyrethroid insecticides on the market. Viper is a concentrate that mixes with water. For some people, any drift that gets on arms or legs, face, etc, can cause a burning sensation that goes away after a few days.
In fact, recently, the EPA enacted changes to the distribution of cypermethrin WP insecticides such as Demon WP and Cyper WP. The EPA is discontinuing registration of 1 lb containers, citing issues with open containers and "drift" of the floating insecticide that could be breathed by the person mixing it.
To answer your question, as long as you follow the label directions, and let everything dry thoroughly, the cat should be fine.
Viper Insecticide is not labeled to be used on carpets for fleas, it should only be applied to baseboards, cracks, crevices, etc. Here is the link - http://www.epestsupply.com/product/VI...