Personally i use the silicon air hose that Eeji suggested earlier in the thread, although i have some 5mm thick soft felt stripping with a double sided tape back that i may change to when i get the time to do it.
The felt strip has the advantage of being soft enough to conform to the gap totally sealing it, and not having to be removed and refitted every time you open the viv doors. Plus it will probably buff off any finger prints (or other marks) on the inner glass when the door is opened. haha
I have found that the paper binder has helped stop Kellog trying to get out of the gap between the 2 doors. He still works his way up and down it occasionally but cant squeeze any of his nose in and it must be softer than a glass edge.
thats a good idea but you should really try and avoid donig that becasue your cutting off alot of the air. Mined you you could use a kitchen roll and flatten it and it what sit in the nice and coseily
Not had the problem yet but have guarded against any attempt at squishing through the gap using the black double glazing sealent rubbers, found a length in a skip, cut to size above and below the lock and it fits nicely and you cannot see it, just slide out when you want to open.. voila
1.0.0 corn snake Striker 1.0.0 dog Merlo 0.1.0 rabbit Sparkle 0.2.0 Cats Skid and Whizz