Active Ingredients: Esfenvalurate and Nylar.
Each fogger covers 652 square feet.
my dog had fleas and this stuff killed them all! it has IGR (insect growth repeller) which kills the offspring of fleas. It also killed some roaches that i wasn't aware were crawling around my building. NO smell afterwards and it doesn't leave behind any liquid/spray... just make sure you place newspaper under each can b/c the spray will leave behind some moisture.....but no messy clean up.... Works just as good a Precor and is half the price.