DS1 will be 3 in March (waaaaah). He's still RF in a Britax Advocate Clicktight and I am in no rush to turn him around. BUT...we live in MT, land of loooong winters and plenty of snow. Last winter I could carry DS1 in/out of the store, etc, keeping his feet clean. This year we also have DS2, so I'm carrying the bucket seat and DS1 is walking...getting snow/mud all over his shoes which then transfers into the car seat and the back of the car's seat. I would feel comfortable FF him now, but it seems silly to do it just but to keep my car clean, and he actually prefers rear facing so why not?! Any recommendations?!

I've thought about taking his shoes off, but it sounds like a pain...not to mention it's been -25F here this week so I'd like to keep our time exposed to the air minimal haha. I've also looked at purchasing something to drape over the seat, but I read somewhere that it would void the Britax warranty (is that even true? And if it is, is that something I even care about? Ha) plus it doesn't solve the problem of getting the actual car seat disgusting and wet.