How to get rid of CAT urin in my basement?


I bought a house from a little old lady who was a hoarder.

The neighbours tell me she had wild cats living with her. Some said up to 30 to 50 cats. They had full use of the house.

I have developed the main floor, using KILLS paint on everything. My basement concrete and walls smell so bad I'm afraid Kills paint is not enough. I plan on running electric heated floor system which means covering the existing concrete with a levelling solution to imbed the wiring. My concerns are will the cat smell go away after I cover it, or should I seal the floor before i add the floor levelling solution.

  9 answers
  • Diane Coverdale Diane Coverdale on Oct 11, 2018

    You will need to find something that will neutralize the ammonia in the urine. There are enzyme based soaps that can work. Check out your local pet store in the cleaning section. There is also a fragrance free version of Febreeze especially formulated for pet odors, that I find that works for my dog's accidents.

  • Pamela Pamela on Oct 11, 2018

    Enzyme spray , found in pet stores.

  • Claude Claude on Oct 11, 2018

    Try an oxygenator machine. You leave the house and remove all plants and pets and let it run. Done.

  • Dianacirce70 Dianacirce70 on Oct 11, 2018

    I would scrub it, get a good odor neutralizer and seal it

  • If it were me, I would bring in the remediation people for a consult, even if you do the work yourself. They deal with horder houses all the time. Typically TSP or a vinegar wash ceiling to floor will work, but this might take an extra step.

  • William William on Oct 11, 2018

    I agree with using the enzyme odor killer from the pet stores. Fiirst wash the walls and floor down with TSP then use the enzyme odor cleaner. Once all is dry paint the walls and floor with Drylock waterproofer. Seals out moisture it'll seal any residual odor in.

  • Cynthia H Cynthia H on Oct 11, 2018

    I am actually trying to do the same thing to the house we are selling. Nothing like the scenario you are facing, but, cat litter boxes and messy cats can do a number on basement floors. I find disinfectant, a scrub brush, gloves and a wet/dry shop vac are my helpers. For such an extreme situation like that many cats, it might be healthier to look into a professional cleaning. If you do it yourself, since you are dealing with feral cats, there may be pests such as fleas, too. I wish you luck!

  • I would definitely try to clean them as best as possible and look into a commercial grade cleaner. Once that's all done I would seal the floors so nothings seeps through.

  • Beg34022042 Beg34022042 on Oct 11, 2018

    Thank you so much everyone. All great solutions.