Natural Homemade Deodorizing Carpet Powder. Pet safe + flea killer. I added borax and tea tree (fleas have been awful this year and with 4 cats and 2 dogs, I need all the flea killing power I can get. My house smells SO good. Very fresh, very refreshing to come in to. You wouldn't even know I had animals if you didn't see them, which is saying A LOT!