I suspect a similar question may have been posted on here in the past - having some problems with cats in my garden, and looked into (non lethal) ways of discouraging them from visiting.
Looking at various methods, motion detecting sprays, hoses, 'smell' deterrents etc. and the associated costs, I realised that it would be ME paying to control an animal that belongs to SOMEBODY else; and why should the cost be borne only by me?
If the owner(s) of these cats cannot, or will not modify the behaviour of 'Tiddles', then why should I be forced to be the only one out of pocket?
If I cage trap these cats, (which I do not own, feed, or encourage onto my property) and then take them to the local animal rescue center (unharmed), which will then charge the 'responsible' owner to be reunited with their pet, will I be breaking any laws, and if so, which laws?