I use the heavy ceramic bowls, and they're too tall to tip in a tub anyways. Works like a charm so far! My big pin is also a rat dunker, which disgusts me to no end, but what can ya do? Lol he's also one that appreciates a fresh bowl of water. Whenever I take out his bowl, he pops his head out of his hide like "Hey, whatcha doing with that?" Then when the fresh water comes in, he beelines it to the dish for a sip. He's quite the character