I do still dust regularly, but both my chameleons have problems and any new ones I get are usually rescues who have some sort of vitamin deficiency. If you gut load well and have good lighting, I also highly recommend regular outdoor time, you pretty much don't have to worry about dusting much at all. My two permanent residents have one chameleons in his senior years who is going through some eye problems but seems to be pulling out (knock on wood), and my other one is a recover victim of poor care from her old home and has severe mbd that she is doing great with.