We got them for pest control as well. Tons of ticks here. They are also very entertaining. My DS and MIL love to eat their eggs. I myself haven't tried them, but I've heard from others they are tasty. The have really cool feathers, and can be used for fly fishing (so I've been told).
My particular guineas have no idea they can roost in trees or on the roof or fly over the fence for that matter.
My neighbor has told me that the guineas alert her dog when the raccoon family that lives in the wood behind our houses is near, and then he comes to chase them off. Our guineas haven't killed any snakes, but have been seen playing with them.
Guineas aren't for everyone, but we like them. The only downside we've had so far was when we house the guineas with the ducks. When the guineas started laying, our guinea cock attack our drake. We ended up building them a small house of their own.
My particular guineas have no idea they can roost in trees or on the roof or fly over the fence for that matter.
My neighbor has told me that the guineas alert her dog when the raccoon family that lives in the wood behind our houses is near, and then he comes to chase them off. Our guineas haven't killed any snakes, but have been seen playing with them.

Guineas aren't for everyone, but we like them. The only downside we've had so far was when we house the guineas with the ducks. When the guineas started laying, our guinea cock attack our drake. We ended up building them a small house of their own.