This is a linoleum floor correct? Rewash your floors with Nature's Miracle, full strength, and let the Nature's Miracle dry on your floor.
I denatured an entire house when I first rented the house I eventually bought. When I first walked into this 4+2 + den the place overwhelmingly reeked of pee. Black light testing revealed pee stains all over the place and even up on the walls. I removed all the carpet and padding but the pee was in the sub flooring in some places. I rented floor sanders. Sanded about 700 sq ft of wood floor (on the main floor). I think I used about 20 gallons of Nature's Miracle on the sanded wood and got the smell out of most of the flooring with just that, but the smell was still in the livingroom floor in a few spots where the wood was stained almost black. You could barely detect it...and if I had had more time, I would have done another week of soaking with Nature's Miracle. But I had to move in; my lease was up on my old place. So, I went ahead and stained the wood floor then put five coats of polyeurothane on top to "seal in" the smell. Worked perfectly.
It's expensive to treat wood with Nature's Miracle. When I contacted the company for advice they didn't recommend it...they said I needed one gallon for every square yard of wood flooring. I didn't use nearly that much, and it can be done. Just takes time and perseverance.