Well my lovely girls are 10 years young and I think are now big and bad *** enough to be without a lidded enclosure. I have them now fenced with cinder blocks stacked 2 high with a lid made with wood and 1/2x 1/2" wire mesh. So I will need to put a fence up for them to keep them from going into the bamboo area in the back yard. I can use the cinder blocks I have but need to fence the other 3 walls. I'm thinking pressure treated wood to make a height of 2 feet. Do you think that would be tall enough? Thanks for your advice.