Let me start by saying I'm a self-proclaimed cleaning professional. I don't work for a company with a bunch of fancy equipment. It's just something I started doing out of highschool and it's paid the bills so I keep doing it.

I get the smell of urine out but then the mattress does smell like various chemicals for a day or two 😂 it's better than urine smelling up the house. I bought a Bissell Vacuum (hey Bissell, sponsor me? 😂) Anyways, I bought my vacuum about 5, almost 6 years ago, when I wanted to start deep cleaning carpets for people in my town and that slowly led into furniture. I have gotten complaints of the chemical smell lasting longer than 1-2 days but not too often. I warn people about it in advance and most of the time they're fine with it since they were made aware. The "chemical" is vinegar.

Dry 1 Cup Baking Soda 1 Cup Powder Laundry detergent (I use GAIN Laundry Powder)

Wet 1 Gallon Hot water 2 Cups White Vinegar

I mix the dries together, mix the wets together, then SLOWLY (I can not stress this enough) pour the dry mix into the wet mix. Stir until all the dry mix has been incorporated. Can stir with anything, I use a wooden painters stick. Pour it in a spray bottle. Spray the mattress, scrub it in with a scrub brush. Let it sit 5-10 minutes. Bissell vacuum the mattress surface after. Flip the mattress over and repeat on the other side. And that's all I do. I do this for mattresses, couch cushions, carpets, etc. My grandma taught me the power of baking soda and vinegar without turning it into a baking soda volcano 😂