The DCats have finally realised that going outside is great and spend alot of the day outside if we are at home (no cat flap, they go in and out of a window which we leave open). The problem is they insist on coming in to use the litter tray! I wish they would go poo elsewhere because I hate cleaning the tray out and DH only does it when I tell him to rather than noticing it needs doing.
Also DCat 2 doesn't seen to realise that all of him needs to be in the tray before he poos, not just his front paws, so he often misses.