Nice to know my tree is also an inspiration Thanks.
The way I keep my tree clean is very simple. With my tree the branches dont really overlap so they dont poop on their branches alot but they do offcourse clean their beaks on the branches.
What I do is just hot water (with a little eucalyptus sometimes) and a sponse and I scrub, scrub, scrub and all dirt gets off real easy.
Every once in a while I will also take down all the ropes and give them a bath too, offcourse the toys get cleaned alot more.
I made a bottom myself for the tree with woodchips for all the birdpoop which is easy to clean, but if you dont have a bottom you can always use one of those mats which you normally use for under your desk chairs.