Enzyme cleaners are quite potent when it comes to dealing with organic smells like dog urine, feces, vomit, and drool. They contain enzymes, which are macromolecular catalysts that break various kinds of bacteria that cause the bad smell in your pet’s mess. Pets are habitual, so one accident is enough to mess up with your pet’s training. Your dog might be encouraged to soil the same spot again and again unless you use a potent enzyme cleaner to remove the smell forever.