Can you put white frosting buckets in the dish washer? It would sure save a lot of scrubbing. I have let the bees have what they want, but they always leave some stuff behind that needs cleaning. I have put other smaller plastic buckets in the dishwasher and they sort of slumped. I only have a few of the frosting buckets and don't want to waste them. By the way, how much honey to they hold? They don't look like a standard 5 gal. bucket.