“what to use to clean cat urine -neutralise cat urine”

That’s a great question Gary. Regarding how to remove dog urine from carpet that has set in, we recommend the same products and techniques. People really rave about Nature’s Miracle and some members of our team have used it as well. We’ve read that it performs well for urine that has dried up, so I would recommend purchasing it and seeing how it works. Best of luck!
Our cat throws up….a LOT. we’re in a rental and moving at the end of August. I was thinking we’d lose our deposit because of these stains, but now I’m thinking maybe not!! Claire, thank you! I’m trying this right now!
The service told me they would come back out believe it or not – for a 3rd time. (Free of charge) They are sending someone else. I guess they are going to blacklight everything again and if nothing is showing up on the surface, they will perform some kind of moisture testing. Told me that if it is in the pad of the carpet they are able to pull up those areas and replace sections of the pad. Really hoping the carpet doesn’t need to go. Nothing is visible and it is certainly much better, but I am ready for my house to smell fresh again. (and be sanitary of course) Hopefully the third visit will be a charm. They have actually been very understanding – thank goodness.
In the laundry, if you use any form of vinegar it can set most stains (although not cat urine). My daughter has a respiratory condition and double lung transplant, so vinegar irritates her lungs, so I tend to use 2 or 3 scoops of Oxyclean (which is odourless, non-toxic and breaks down into hydrogen, water and oxygen in the environment) rather than vinegar in the laundry too, including to remove old cat urine and residual smells). I sometimes hang clothes outside to dry and the natural ozone of sunshine also helps remove odours. (Just don’t have someone with sensitive lungs fold laundry that was dried in sunlight, as the ozone that clings to the clothes for hours or even a couple of days is extremely harmful to lungs. That ozone smell comes in on the clean laundry, and is especially strong when the clothes have been drying outside in the winter and come in very cold. Further, if you have problems with the smell of clothes mold, persistent perfume, smoke, urine, or other intractable odours, the extra whammy of hanging outside, soaking in oxyclean for a few days, then washing in a strong solution of oxiclean and drying in sunshine usually eliminates it. I found that even clothes packed away for years did not develop the usual smell of clothes mold and yellow spots that most clothes develop in weeks or months of being packed away.
A: The first step in removing the odor of burned food is to open the windows; this lets air circulate. The fresh air comes in, helping the burnt smell fade away. There are several other options that move the process along. A burnt smell is typical when food is seriously overcooked.
I have the problem with my bed blanket and I tried everything and it is only a few of my cats that do it. I have a lot of cats/kittens at the moment. I washed in vinegar, laundry soap and pet urine spray. I can’t get it out at all. They even pee on it when i am sleeping with it. I just dont know what to do. They are spayed and neutered.
If the area you are working with is the carpet, work the baking soda into the carpet fibers carefully with an old toothbrush or something similar, something that won’t damage the carpet fibers. And do be careful that you don’t pull or snag the carpet fibers.
Large volumes of concentrated alkaline salts and strong odors that come from bacteria feeding on the waste products contained in the urine can make professional cleaning necessary. The alkaline salts can create a very high pH environment (10 – 10.4) and destabilize normally stable dyes that cause bleeding. This is very difficult to address without steam cleaning and specialized cleaner.
Antimicrobial chemicals, aka antimicrobials, are designed to kill microbes.  It has been shown that not all microbes are bad.  In fact, many microbes are good, and help us stay safe and healthy (some hang out in your ears and whisper things like “drink more water” and “do some deep knee bends”). 
We just got two kittens about a week and a half ago. They both use the litter box, but I noticed he doesn’t cover up. As I was cleaning today I’ve noticed cat pee and a lot of different places. I caught him tonight peeing on my daughter’s bed, a mink blanket I got in Korea. He is only 7 to 9 weeks old and we got him from the animal shelter. Do you think it’s because he’s still young and having accidents or could there possibly be something else? Everything else about him is great. Oh, we do have 2 dogs but they are separated by a baby gate so they can see each other but not so much interaction just yet.
Cover the stain with paper towels or rags and walk lightly over or place something heavy on top to soak up any excess liquid. Sprinkle a generous handful of baking soda over the stain when no more liquid can be pulled up, and mix together ½ cup of 3% hydrogen peroxide and 1 teaspoon of dish liquid. Slowly pour the solution over the stain and baking soda. Gently scrub the mixture into the carpet fibers with a scrub-brush or cloth, and then let it sit for 10-15 minutes. Vacuum the area thoroughly. For tough stains, repeat the above steps.
Leather and leather-like fabrics are a little more delicate, but can still be cleaned. Make a solution of equal parts vinegar and water. Soak a cloth and wring out as much liquid as you can, so the cloth barely damp. Then, wipe the surface of the fabric to remove any troublesome smells that are lurking.[4]
The problem with cat urine soiling on carpets and other porous furnishings is that it is not always detected until it begins to smell. When the cat first urinates it has very little smell but as time goes by and the urine begins to decompose the odor becomes very unpleasant.
I strongly advise that if you are contemplating the above instructions you stop. There are cleaners that can remove the stains and smell without you having to play laboratory and creating things that can ruin your home. My choice of cleaner for pet stains is Genesis 950. Cleans better then anything I have tried . . . and I have been through a lot of different products. But even if you don’t use that, use anything . . . just don’t do the vinegar/baking soda thing.
Have multiple litter boxes. Older cats can’t travel too far to do their business. Put litter boxes in rooms where your elderly kitty likes to sleep. In multiple-cat households, having litter boxes in different locations makes it impossible for a dominant cat to “guard” the box and not allow other cats to use it.
This product will really deep clean your carpet and is particularly good at getting rid of lingering odors and old stains. Nature’s Miracle call this ‘odor lock technology’ and it really does seem to break down the molecules that cause the smell and this results in a permanent solution to any difficult to remove smells. It is also very good for removal of allergens.