I just got my 4 4'x4' boxes lined up and ready to be filled. I set them over an existing lawn and lined them with cardboard. I am in the 11th hour right before filling with the soil that was dumped in my driveway yesterday and I got to thinking about chicken wire or hardware cloth. I have never had any mole activity in my yard (have not seen any in my entire neighborhood) and have never seen any rodents or activity of the like. I have birds and bunnies and lots of hawks and eagles flying around. I have a rather small lot (.14 acre) with no critter friendly area for nests and such. I keep everything weeded and clean to deter pests.

On that note...do I have to lay down some kind of wire in the bottom? My beds are 11" deep. Would love some opinions on the matter.