I do know They are plastic, but I was way more concerned over holding ants out with the cats' food than I used to be about the material in the bowls. I continue to use them for drinking water for my (indoor) cats. Location this feeder up couldn’t be easier https://augustnopss.blogsvirals.com/34588431/how-much-you-need-to-expect-you-ll-pay-for-a-good-pet-shop-dubai