It's kind of ridiculous that when searching for dog proof trashcans 99% of the ones that come up have a foot pedal that opens them ... I don't know how stupid they think dogs are, but mine figured the pedal out in about a day so there's really nothing "dog proof" about them in the least.
The other option I saw was a touch sensitive ones, but again, not going to take long for the dogs to catch onto that, especially since they'll be poking their face around anyways.
I tried putting something under the pedal to keep it from depressing, and also put a weight on top of the lid so they can't nudge it open (they're pretty tall), but it's a hassle and sometimes I forget and come home to a mess every time ... They never try getting in when I'm at home, even if I'm in the other room, so there's really no way for me to train them.
Does anyone have any other simple tricks that don't require not having a lousy memory or know of any truly dog proof trashcans? Maybe there are some that lock automatically?