I have built a container for my cat litter tray in the hallway to keep it out of sight and out of mind and it is looking pretty good, but wondering about the long term viability in terms of build up of cat piss. The litter tray itself is a massive stainless steel one with tall sides so not super worried, but wondering is there anything at all I can do for a bit more peace of mind?
What part of the box is the cat going to pee on? Aiming error and they get the walls? I assume it'll be on the inside?
In that case it wouldn't matter how it looks so just keep an eye on the trash for an impermeable sheet material you can fix on the inside. Plexiglass would be perfect but see what the universe sends to you. Or you could buy something low cost like laminate flooring... go to a big hardware store and look around they have many different waterproof materials. Unless you really enjoy the process, or what to learn it for another project, I think doing some expensive elaborate wood finishing would be a waste. If you have already built it, it'll be a pain in the ass to now finish the inside smoothly.
To be honest they shouldn't pee on it at all as the tray itself is massive, maybe piss mist would rise and touch the ceiling of the box?
That's a really good suggestion though thank you, definitely sounds like a good option for me