Hi

You have to risk assess letting out according to where you live and what you want to do with your cats.

If you are a breeder, where ever you are, I would suggest that you would not want to let the local toms (whole male cats) get at your pedigree queen. Nor do you want your show cats compromised by possible exposure to disease.

If you are a pet owner, you have to weigh up the risks of letting your cat out.

Will they get stolen?

Will they investigate territories across a busy road?

Even if you live on a relatively quite estate is there a lot of car activity which may lead to a rta?

Are there gangs of children/youth that may catch and torment them?

Is your cat insured/microchipped?

Do your risk assessment and make an informed decision. What is the likelihood of it happening? Won't mean that the worst won't happen, but the risk may be minimal, depending on where you live.