We got it installed last year before we went away so our neighbours could look after them without waiting for them to come in and out while we were on holiday. 8 months later and we are still holding the damn thing open for them both!
The older cat even uses it like a door knocker, pushing it open to make a noise to let us know he wants to come in so it's not like he can't work it!
Any tips for getting cats o use one by themselves?