We are recovering from an experiment introducing a new cat into our household, which resulted in a house bathed in cats' urine marking. Having used up one bottle of Pet Odor Eliminator, I ordered two refills. The only place Zero Odor has not been effective after one (or sometimes two) treatments is on a slab of unfinished marble--the odor molecules must be deep in the open stone pores. I have given repeat treatments there (perhaps five?), and I think it's done. I am so glad for something in my life that seems to work the way it is supposed to. Thank you.
