They work well for the most part, the only part that is a problem is that the birds can push them over on the side and they drain out. Haven't been able to figure out a way to keep that from happening. If I can then they are perfect.
Rabbits LUV their water....and drink lots of it. Adult rabbits have abused the plastic bowl styles, but these offer a larger bowl area and the metal should hold up better.
I’m using the DIY metal watering cups to water my corturnix quail and rabbits. So far my animals have seemed to really enjoy getting a new way to take in water. I add a little unfiltered apple cider vinegar for my animals. I just love rentacoopus products so far and look forward to the chick warner plate in the spring and some feeders for my quail. Thank you all for helping to keep our animals fed and watered efficiently!
Southeastern WA state
The plastic wingnut on unit #1 was stripped, and unusable. Thankfully, had the spare to install in the ferret's cage. Works great, would repurchase and recommend to others.