Nice article..i just want to share my idea...
I am planning to build a catio for my two cats. However, I want to enclose my catio with pet proof screen over the wire to keep out mosquitoes. My vet said that cats can get heartworm disease just like dogs can and for cats there is no prevention medication. So why don't I ever see anyone's catio covered with screen? Just wondering why no one thinks it is necessary.

http://outsidecatenclosures.blogspot.com/