Posted: 24/03/2012 at 12:31
Yes - the theory is that each squirrel that eats a garlic bulb will be deterred from the other bulbs. If nothing else you get lots of tasty garlic.
Pigeons will respond briefly to a dummy hawk or owl, but soon learn to ignore it. he pigeon is a big bird, but a Harris Hawk (much more commonly kept by falconers) would happily chase them around and prolong the effect of a dummy (just like at airports and the Millenium Stadium, Cardiff)
Pigeons are also gregarious feeders - where they see one bird having a safe nosh they tend to join in. If all else fails restrict the food that they can access. I find all the species I want can learn to feed from hanging feeders, except the blackbirds and thrushes. Have'nt worked out what to do for them yet.