The Moth balls is the best cheapest and least impact on the garden. My next door neighbours were getting really hacked off with some Tom coming into there\'s and dumping were ever it liked. Doesn\'t now.
Also try to spot were the cats either climb over fences or under them. Liquify Strong onions and horseradish to a paste and paint on the area. If a cat gets that on its fur it\'s not going to be coming back in a hurry.
This is a true story and in no way do I suggest that you consider emulating it.:
A long time ago my godfather was into growing leeks for show. Now anyone living in or from the North of England will tell you that Leek Growing is a Religion.
He was particularliy proud of his leek patch and primed the ground with compost, and a bucket of Pigs blood (I kid you not!).
He started to get a problem with a Tom taking a dump in the leek patch an killing off his leeks.
His solution, (baring in mind he was a tough veteran of the early 50\'s Malayan Jungle Campaign) was to take a break-barrel air gun, a match head and wrap it in the silver paper that his cigarrettes came in and wait in the shed.
Cat arrives, starts to perform, He takes aim and fires.........Instant home made tracer round.
You can guess the rest.\"