https://www.budk.com/Trailblazer-Waterproof-Camping-Blanket-250D-Ripstop-Polyester-Polar-Fleece-Polyurethane-Coating-58-x-84-39809
This has saved my life. My bun Hades peed on my bed 2-3 times. I bought this and keep it shiny-side up, and he hasn’t even tried to pee since I got it! Not once! But even if he does, it’s waterproof (I tested it) so it wouldn’t soak through to any of the blankets underneath. 🙂 I think he doesn’t want to pee on it bc it doesn’t smell like me and it doesn’t feel soft and comfy (it feels slide-y on his feet). Highly recommend!
For the week-ish before this arrived in the mail, I was using a plastic shower curtain on top of all my blankets lol. Equally as effective, but more crinkly, less comfy, and gets full of moisture when you sleep under it (because, you know, breathing and all that). 0/10 recommend haha, but it works temporarily! Hades didn’t pee on the shower curtain either. Good luck!!