lid weights much more than them. They will need to leverage off of something to achieve the feat. Water bottle would slip and fall and the food hopper sits against the lid. I have used the same lids for years with rats and never one escape ever. 2x2's give nice weightOriginally Posted by bobbi
how sure are you that they cant push that lid up and escape? just curious...
awsome cheepness though
plus they are a snug fit.
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