cat deterrent garden

I have six outdoor gardens in my backyard, framed in with railroad ties, and they are level with the grass. I have a chain link fence on two sides of the yard, but my neighbor and I share a massive rock wall between our yards and I have a pest problem. Anything ranging from squirrels and birds to cats and dogs. I live in the Lake Tahoe area (Truckee) and we have a large range of predators. I’ve seen black bears in the neighborhood, and heard stories of mountain lions on the prowl. I hear coyotes howling every night. My thought was instead of protecting the gardens with chicken wire or using a greenhouse, to place a couple drops of urine scent on the railroad ties. I want to be able to "scare" away the other animals without inviting the big ones into my yard. Has anyone used synthetic urine as a deterrent for pests? My thought was to use something along the lines of Brown Bear scent or Mountain Lion/Cougar scent.
Let me add that my gardens are 3′ x 6′ (2), 4′x4′(3) and 2′x20′. I have a lot of ground to cover, fences degrade the extensive landscaping I’ve done in the yard. I just want an invisible deterrent with nominal side effects.

cat deterrent garden

Protect your yard or campsite against unwanted pests and even protect your home from intruders with this amazing pest repeller product from Aspectek. It features fully adjustable ultrasonic sound settings, strobe light, alarm and even a 4-function remote control. Perfect keeping all sorts of pests away from where you live and play!

repel cat

Yard Gard Electronic Pest Repeller repels squirrels, raccoons, rabbits, possums, skunks, deer, dogs, cats and many other problem pests from gardens and yards.

cat deterrent garden

The Scarecrow motion triggered animal deterrent is perfect for keeping small animals such as squirrels, raccoons, possums, rabbits, even deer and other scavenging animals away from your home and garden.