Depending on where the pen is, can you get some linoleum and have it where 6 inches sticks out from the pen and then fold the ends up and attach the ends to the pen somehow? This would essentially “box in” the pen and keep hay and poops inside.

Just to warn you, In my bunnies condo i have linoleum for the flooring and i had to cover the opening to were the ramp was with wood because they kept on chewing it and swallowing it.

here is a video on how to make coroplast chew resistant. http://www.youtube.com/watch?v=ZWHRPP9U8h0

Ooo good topic lwayne! I was just wondering this myself!

I moved my bunnies’ ex-pen out to the living room, and I currently have a soft tarp under the pen to protect the carpet and make clean up “easy”. But I spent about 30 minutes folding the tarp and attaching it to the pen so it makes about a 6in hay/poop guard around the side. This would be fine, except that I have to take the tarp out every few weeks to give it a thorough cleaning, and the bunnies tend to chew holes in the tarp after a while, so then I have to replace it and go through that ordeal of making it look neat all over again!

Another issue I have with the tarp is that it just looks so tacky sitting out there in my living room in all it’s garish blue glory! So I’m hoping to find an waterproof, stray-hay-and-poop-proof option in a more subdued color that better matches the rest of the living room

Thanks for the link Mocha, that’s a good idea to put edge guards on the cloroplast. Idk if cloroplast will work for me though b/c I need not only a floor but also something that comes up around the sides, and to do that with cloroplast, I’d have to cut it and use difference sections, so I’m concerned about gaps…

here is another video on how to make the bottom of a cage with coroplast. as you can see in this video you don’t really cut it.
http://www.youtube.com/watch?v=S-KJqiH5DfM

I had used tiles in the past, sometimes the ceramic ones go on sale and you can get a bunch for a decent price. You want them placed with the rough side upward. I just put those on top of my carpet inside their pen. It can be a pain to clean, but you don’t have to pick them up every time you clean. I just did a thorough vacuum once per week where I would clean in between the tiles. I did this when Mops was still alive. He used to tear up everything.

Other sources for large plastic trays might be:
gardening/horticulture centres
hydroponics
automotive
drainage system pans

You might even be able to find replacement trays for dog crates. 

ETA: I found this stuff called skirt-guard online this week. It’s marketed for mobile homes. I think it could have some application for bunny proofing.  

 from skirt-guard.com

It would be good if it could be applied to indoor skirtings but I don’t think it can becasue it needs that gap between the wall and skirting.

It might be able to be used in an ex-pen though.  Those plastic urine guards would be similar.

Also, this is from Cool Habitats gallery from member Osprey.

The base is plywood with vinyl stuck on top then molding around the outside. You could use even wider molding. If they chew the molding, would it matter? It’d help keep their teeth trim!

Jersey, thanks for pointing out Osprey’s pen, that is brilliant! I was thinking something along those lines… using plywood and like 1×4 pieces of lumber but was concerned about how the final product would turn out. Definitely going to get started on that

Lovely! Will be easier on you too for cleaning. I do predict you’ll be finding a bunny at some point between the wall and the box lid. lol. Far too tempting.