Best urine odor elimination. What methods have worked for you?

Odo-Ban works wonders. It is a disinfectant, a fungicide and smells lovely. Comes in several scents. I use a little bit in the bleach dispenser, about half a cup, along with regular detergent and Biz, which is a washing powder.
It also helps to make sure you are putting things in to be washed as soon as you can.

I have trouble with strong smells but I got used to a laundry scent booster which you throw in at the beginning of the wash. That helped a lot.

But I do also recommend Nature's Miracle. This is something for dogs and/or cats, but it also handles human urine scents. This is what you want to use on things that cannot go into the washing machine. You just spray it on whatever has urine on it and let it dry. As it dries it will sometimes smell worse, but then it is eaten by the enzymes in the Nature's Miracle and it is gone.

You cannot use anything else at first or while using it, by which I mean, you spray it directly on the couch where the urine is, and then let it dry. You don't try to clean it with anything else or it might not work and you will never get the smell completely out. If we are talking rugs here, you may need to spray the rug until it is soaked completely through to the pad below. Couches, you need to spray to the padding underneath too. Mattresses, couches, pillows, you name it, I've used Nature's Miracle on it. Laundry, too.

But for regular cleaning of clothes, I use Odo-Ban. It wasn't just to make the stuff smell good, it was also because we were dealing with human waste and blood a lot, so it was disinfecting the items in question. I used it for the floors and all of the bathroom surfaces. They use it after fires and other disasters. You can also use a bit of it in the spot for fabric softener, where it will leave behind a pleasant scent.

Others have used vinegar and baking soda and we did that for a while in the beginning but it just became a lot of work that didn't work as well for us as the Odo-Ban and Nature's Miracle did. We used washable bed pads most of the time, although when hospice came into the picture we had some disposable pads that we used on top of the washable pads whenever there was going to be a lot of material that we would normally try using paper towels with. At times, especially in the beginning we had absolutely soaked items and I would be gagging throwing them into the washing machine with the vinegar and baking soda, letting them soak in there.

People sometimes put pans or pots of vinegar in the room where most of it happens, and that works really well too. Remember a plastic garbage can will eventually pick up the smells of adult briefs. You can put them in separate plastic bags and tie them up (grocery store bags) and then take them outside right away. They do sell adult diaper systems that will seal them off in plastic and then keep them inside a diaper pail until it's time to take them outside. Look around for used adult briefs which may have fallen or been hidden by the user under the bed, in a drawer, anywhere really.

Good luck and let us know how it goes. Also, let us know if you find out anything earth shaking in the world of urine and other bathroom smells. Things change all the time and maybe someone will invent some type of laser to destroy smells without hurting fabric.

Edit: I just want to say that I am someone who didn't even regularly use paper towels or napkins before I started taking care of my mom. I do care about the environment but a lot of that had to be put on hold. If this were a baby, I would use cloth diapers, but one of the reasons you use those is you want the kid to feel wet so they will start using the toilet. I couldn't do that for mom, because you want to keep the patient dry. I used a lot more plastic than I would have normally and I do not feel guilty. Industrial users should do more on their part. Individuals can only do so much, so if this bothers you, keep these things in mind.

Forgot to add
They now sell waterproof covers fir duvets
for pillow cases
to lay down on - ( like dog puppy pads)
it protects a lot
dislosabjs undies with an incontinence popped in and change frequently

I used Odoban after I learned that was what the SNF used. Worked for us. You can buy sprays or concentrate and use in the laundry or dilute to disinfect.

I use half a cup of vinegar, works every time. I just use half a cup and put in where the fabric softener goes.

Diluted white vinegar in the wash should help
if funds allow disposable ones
Otherwise cheap white vinegar diluted

I find myself washing soaked bed pads more than once to get the smells out.
One time through the washer doesn't really get them clean enough.

I was getting tired of washing so much; too much time, and too much water and electricity spent washing urine-soaked bed pads, along with blankets and clothing.

I started relying more on disposable bed pads. The large ones - 30" x 36".
This started 9 months ago when my husband's hospice provider provided disposable pads, so I started using them more. While I still cover the bed with 2 washable pads, I have a disposable pad on top of that, so it can easily be removed when soaked, and there is still a dry pad under him. I am spending much less time washing bed pads!

As for clothing, my husband voluntarily stopped wearing pants a few years ago.
That works out great for me. One less pee-soaked thing to wash! However, I find the pee often wicks up his shirt in the back. If it still smells after one washing, I will wash a second time. My washer does not have a pre-wash setting, so I use the speed wash to get the urine out, then wash again as normal load. Just think, if you are not pre-rinsing, then everything is just washing in urine-water.

In lieu of pants, he likes to have a blanket over him at all times. I buy lots of throw blankets, so they are easy to wash and store.

Vinegar will neutralize urine. I use about a quarter cup in the washer.
I use Charlie's Soap powder.

As JoAnn pointed out, the heat of the dryer seems to bring out the smell. Another good trick for your smelly items is to hang them outside, if you can, in the sun. The sun's rays actually kill bacteria, and the sun and fresh air will make your laundry smell fresh! If it is too stiff or dusty after hanging outside, I toss them in the dryer for short time to fluff.

I found drying in the dryer brings out the smell. I would not use bleach on colored clothes. I used to soak Moms polyester slacks in vinegar and water for a while before washing.

Wash everthing in hot water, detergent and bleach. Get the directions on how much bleach from the bleach bottle.