The SSSCat Refill Spray is for the SSScat Spray Deterrent.  Each refill can is 3.89 ounces and has 80-100 sprays. The spray in the SSSCat canister is a natural, odorless spray and completely safe for humans and pets. Cats and dogs find the scent unpleasant. The spray quickly dissipates on release and won't leave behind any stains.