I just bought one of these primarily for my tiel Penny who has neurological issues, and I want to avoid her perhaps falling off the perch. All the tiels are now competing for this perch! Not sure why it is so popular but I'm getting more. The wood does get dirty but not as fast as I thought it might -- good bar spacing and great price point. I can scrub it periodically and then for $8.50 toss and get a new one if needed. Maybe it is the novelty of the perch formation or maybe they all find it more secure and comfortable.