Cheap 'n' cheezy, just like all the newer LitterMaid receptacles are.  Sure wish they would bring back the older, sturdier ones.  Really makes you feel like a captive market, since you don't have much choice but to use these if you want to use the LitterMaid.  I line them with bags, but the receptacles are so thin that they crack and split after about 3-4 uses just from putting them into and taking them out of the LitterMaid, so have to be replaced despite being lined.