we breed cats & get "sprayed" quite often

using a deodorizing spray especially designed for organic stains & then washing seems to work fine. did you know that spray works on floors & beds & carpets too ?

could he be having a territorial problem with one of your other cats ? many cats like to pee in the bath, but peeing on the bed may be territorial.

also worth having a serum creatinine blood test done at the vet, if it is raised a special diet could keep him healthy for years, if you are lucky. How old is he ? Is he drinking more water than usual ? If he isn't you can probably rule out kidney failure anyway.

we know several Maine Coon breeders, if you think it might be breed related.