My bird ripped the the rubber cushing within 30 mins. So we had to toss it hes still plucking away at his feathers For the price it was i would say poorly design
WE own an Umbrella Cockatoo and I definitely notice a difference when I add this to her water. Sometimes my husband doesn't use it and I can usually tell the difference after only a day or two. I also tried the hemp seeds but she would have no part of them. One product is better than none.