I have this problem too, makes me fume when I occasionally find them on Hoppity or Hector's coats. I've tried everything, beer, salt, organic pellets, coffee grounds, seaweed, grapefruit, hair from dogs coat after brushing and copper wire. The copper wire does work but I'd need hundreds of feet due to rabbit hutch and run setting. They eat everything, even ate all my Rosemary last year. They climb up my door and windows at night, it's like a slug horror film in my garden. I live in a village and seems to be a problem all over.