Bug Block contains more of the important active ingredients pyrethrins (0.10%) and permethrin (0.20%). The effectiveness lasts for 7 to 14 days after the initial treatment period. It kills and repels more than 70 species of pests that includes all of the common species of flies, plus hard-to-kill threats such as scorpions, black widow spiders, ticks, gnats, cockroaches and mosquitoes. Contains no oily petroleum distillates to irritate or attract dirt and dust on the coat. Cannot be shipped to New York.