How to Completely Neutralize and Eliminate Pet Odors

It is rare, but now and then I hear from a reader who is frustrated using one of my all-time favorite products, Nok-Out. I love Nok-Out (also known as SNiPER) because it eliminates odors; it is harmless for pets and children, not poisonous, fragrance-free, fume-free. Awesome stuff.

The feedback I get is mostly filled with praise and gratitude. However, now and then I hear from someone like Linda, who is facing a tough, smelly situation that because of its location, requires more toil and patience.


Dear Mary: I have been using Nok-Out very successfully for months. It is fantastic, thank you for the recommendation! However, now I have a horrible odor that I cannot get rid of. Cat urine. On a sofa and chair. She sprayed on them. (Did you know that a spayed female will spray under stress? ) I cannot get the odor out. I have soaked the stains thoroughly, more than once. The stench might go away for a short period, or it might smell like a combo of urine and Nok-Out for awhile (a kind of soapy smell in this case). Then the full odor returns. Help! I can’t stand it! Linda

Dear Linda: Oh no, this is bad! The problem is clear—the offending odor (cat urine) soaked into the stuffing of those pieces of furniture. The Nok-Out has to penetrate successfully to reach every area that was infected. If it was a true “spray” is it possible that cat urine went in all directions. Perhaps you need to expand the area of treatment?

I am going to send an SOS to Ted Price at Nok-Out Central asking him to respond with his best shot. I am certain I know why you’re having this problem, but I’m not fully confident of the specific solution for it. Mary

Dear Ted: Can you take a look at Linda’s cat odor problem, which I am including with this message, and then weigh in on how she can use Nok-Out to eliminate this horrible odor, once and for all? Mary

Dear Linda: I feel your pain! But don’t worry, there is a permanent solution to this problem and I’m sure I can help.

The most important thing you need to know when using Nok-Out is that it is an oxidizer. What this means is that when it comes into direct contact with the stinky stuff, it oxidizes (think “changes”) that stuff into something that no longer has an odor. The operative words here are “direct contact.”

Usually, when it appears that Nok-Out didn’t work, what has happened is that somehow, Nok-Out did not come into contact with all of the smelly stuff.

For example, I bought a used sofa and when I put it into my living room, discovered that it had a horrible musty odor. So I sprayed it all over, waited for it to dry and it smelled better so I was happy.

But a day or two later, that musty smell had returned. So I sprayed it again, with (predictably) the exact same result.

So I put my thinking cap on, and did a little homework and learned that musty odors come from a fungus. Then I realized that I had only sprayed the upholstery and the fungus was probably living deep in all the stuffing. Therefore, I didn’t make contact with the source of the odor.

So I got my Nok-Out a third time, and sprayed that sofa HEAVILY. It soaked it all up like a sponge and took almost a week to dry fully. But when it did dry, the odor was gone and the fungus that was the source, that was gone, too.

It has now been four years and the smell has not returned. The moral of the story is that direct contact with the source is essential so that Nok-Out can do its work.

I think that somehow, direct contact with the odor source has not fully happened for you yet. I want to encourage you to re-think your application protocol. Ted

Nok-Out and SNiPER are available direct from the company at Or call 866-551-1927 to speak directly with Ted if you need help with a specific stinky situation.

NOTE: SNiPER is an EPA-registered disinfectant, Nok-Out is not. SNiPER is stronger than Nok-Out, but has the same active ingredient, chlorine dioxide.

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11 replies
  1. Veronica says:

    Hi Mary,

    My big dog recently had diarrhea in my car — not on the heavy waterproof seat covers, not on the heavy-duty rubber, lipped floor mats. No, my guy decided to stick his butt between the front seats and let go all over the only unprotected part of my car’s interior — the emergency brake and uncovered carpet down the sides. We cleaned and shampooed several times. Then we treated with Nok-Out, several times. Finally I ordered another gallon and told my husband to pour it all over the area so it couldn’t help but touch the affected fibers or padding. Still, however, the car stank of dog poop and chemical smell. I was desperate (and nauseous)! Got a bright idea about using activated charcoal. Ordered four pouches, maybe 4 inches square each. The next morning, the smell was gone. Like, gone-gone! Thought I’d share. Thanks!

    • Mary Hunt says:

      Given the severity of the problem and the amount of Nok-Out you used, it does follow protocol that it would takes days if not weeks to completely “oxidize.” But you did the right thing making sure that Nok-Out came in direct content with every smidgen of that untimely “deposit.” Happy to hear the problem has been solved!

  2. Michelle S. says:

    I recently bought a certified pre-owned leased SUV from a dealer while on vacation in Florida (it wasn’t planned but I couldn’t pass up the deal). When I went to pick up my “new” car it smelled great from the car deodorizers they put in when they detailed it. But after a few days in the hot sun I started to notice a smell that I can only describe as “wet dog” (those of you who own dogs know that smell). I brought it back to the dealer and they shampooed all the carpets and did some kind of enzyme treatment but the odor persisted. I was at the tail end of my vacation and had to head back home to upstate NY so I could not return to the dealer.

    I bought no less than five different types of deodorizers, lava rocks, charcoal and dampness products and stuffed them under all the seats and in the cargo area but nothing was working. I forgot all about the jug of Nok-Out that I had under my sink. I treated all the seats, rugs and cargo area but the smell got worse. I knew I needed to treat it all again and cover everything because I had no way of knowing exactly where the odor was coming from. So I bought another gallon and really soaked the heck out of all the areas again. And lo and behold, the odor went away after a couple of weeks and has never returned. I am now a loyal customer.

    • Mary Hunt says:

      Yes! Your description along with the outcome is exactly the way that Nok-Out works. It takes time! It’s a chemical reaction going on. Congrats on that new car that has even better than “new car” smell!

  3. Christy Scott says:

    I finally ordered a gallon of Nok-Out, and filled a spray bottle halfway with it and the rest water. I sprayed a throw that leans over my couch and it appears bleached. Should Nok-Out not be used on colored items?

    • Mary Hunt says:

      I’m wondering if you have laundered or cleaned that throw with vinegar? Nok-Out labeling warns about this … that if you have treatted a carpet stain/odor with vinegar, you must neutralize that with baking soda first before treating with Nok-Out. It’s always recommended to test any kind of new treatment in an inconspicuous place first … always. I’m sorry to hear about your throw!

      • Christy Scott says:

        No, not treated or washed with anything else since I purchased it. Maybe an inferior dye was used, or some kind of dye that leaves an acid in it. I am now, however, afraid to use it on any colored upholstery, unless I try it on a hidden spot first.

  4. Sandy Jackson says:

    Mary, My daughter has this constant battle also. She has 3 very active boys and three very spoiled hound dogs that love her chairs and couch. I noticed that she encases the pillow part of the cushions to her furniture in a plastic bag before putting them in their respective washable covers. She usually launders the covers every week to 10 days and she also changes bags at this time too. Also a plus, the bags make the covers slide on easier.

    • Dolores Fowler says:

      Brilliant! Mary, I have a problem with dog urine on the living room and bedroom carpets. I do need to replace the carpet in those areas and wonder what kind of flooring I should get? I have cement under the existing carpet, which is very old. Can you recommend something? Please!!!

      • Mary Hunt says:

        I suggest you look seriously as “luxury vinyl planking.” You can see this at stores like Home Depot and Lowes. It’s beautiful to look at, easy to install. But it is waterproof—that means it is not porous so pet accidents can be removed. I don’t have a brand name for you but there are several you should look at.

      • Sue in MN says:

        Dolores – Please do be aware that the surface of the vinyl plank flooring is waterproof, but that the pieces are separate, with grooves that lock together and if the urine puddles, it can seep down into them – making it very difficult to treat (a friend who rents seasonal homes near me had this happen after a renter had an untrained pet.) The solution was sheet vinyl that looked like wood flooring. It comes in 12′ and 15′ widths, and if it must be seamed together, the seam is sealed. It also comes in many qualities and colors, and the best do look quite like plank flooring. The widest varieties are available from flooring specialists instead of “big box” retailers. Don’t reject the idea of sheet vinyl without looking at it because you remember the stuff we always used in kitchens and utility rooms. And the best news of all – cleanup is a snap! Daily or frequent dry mopping with a good micro-fiber mop and regular mopping with a Shark steam mop – using just distilled water, no chemicals – will keep it like new.

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