If your dogs are of the molting kind and you don't want to risk chemical warfare in your garden, then the dogs might hold the answer.
This year, I took a tip from a gardening magazine and used some groomed-out dog fur, which acts as a deterrent, if you use it as a mulch around your prized plants. It also acts as a fertilizer, adding nitrogen as it breaks down.
Some think it sounds too good to be true, but its protected many of my plants when I tried it, it seems slugs just do a U turn rather than trying to transverse it.