Could be a year Lynn, until they save up enough for a rent deposit and are sure of a steady income.
I am almost ready to make up a batch of of this recipe that I saw on Cubits for keeping animals out of the garden.
http://cubits.org/cactussuccul...
Except when they see a bird or cat on the other side of the back fence, they go tearing down there at a galloping speed (one of them even jumps right through the raised beds to get there!) and I doubt any concoction will stop them from running through the plants at that point. It may at least keep them from leaving their 'mess' around my plants.