Because dogs and cats don’t sweat, their urine contains alkaline salts which absorb moisture out of the air. Thus, pet urine never really dries. It becomes a feeding ground for bacteria which causes odor, staining and discoloration. Minor problems can be handled with a combination of germicidal and enzyme surface treatments and enzyme injections into the padding. Major situations usually require pad replacement and floor treatment in addition to treating the carpet. We have even cleaned up after a bear!