We've had Hobbes for 4 months. Our previous cat 'Porridge' went missing while we were living in Canada (he stayed behind in the UK with friends). Hobbes is completely different to Porridge. Porridge was street smart and loved being outside; I'm confident he could've crossed a dual carriageway if necessary. Hobbes, on the other hand, doesn't venture far from the house and races back in if a bird flies overhead! Tabcat seemed the perfect solution and he's taken to it really well. We've trained him to come back into the house when tabcat is activated which means we don't have to supervise him. Great product!