We have taken the boys in the garden with is the last 2 days. They are 9 months. Have been debating this but their behaviour indoors (they are bored and stressed despite my best efforts and them being a tight social group) is telling me it's the right thing to do. Theyve been neutered, chipped, flea and worm protection collars and loc8or tags. So they've been indoors for months. OMG the change is amazing. They love it, stalking the insects and rabbits (nonplussed), lying in the bushes. We have a big garden backing onto others and a quiet road out front so there is risk but fairly low. I took a deep breath when they went into the neighbours on the first day but they came back with a miaow. Cat flap is in and they are getting it but I'm only letting them out when we're with them for the first couple of weeks. Last night they came in and slept all evening then all night!