I agree with what has said please please don't let your ragdoll out its not just the fact they could get hurt they can get stolen too most just love to love and will go off with just about anyone so please be careful.Think about cat proofing your garden or making a pen like chris has {which by the way is very nice chris}
Or you could get your kitten used to a harness and lead and take it out that way.I have 2 very young boys so I know what you mean but you just have to be very firm with them that windows and doors are to be closed and tell them why and that should help.

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