Has anyone used this product? It is called the Phantom Pest Wildlife Deterrent, the site is www.freewebs.com/walnut_creek_enterprises/fox.htm My father is losing a few chickens to a bold, daytime hunting fox. He gave in and lets them free-range without a fence (Eeek, I know, I may just spring for the materials for him. He took down his little pen when he was successful at free-ranging them for a few weeks. Ooops.) He sent me the above link. Has anyone tried this, if so, is it worth it? I am thinking "electro-net!" I have suggested "22!" But mom is resisting that idea for now.