No, fake owls keep rabbits away for only a few days at best. Rabbits may freeze or run when they first spot a new owl decoy in your garden. But they figure out it's fake within about a week. After that, you'll see them feeding right next to it like it isn't even there.
In my experience, an owl decoy rabbits are meant to fear only works for about three days. I placed one at the edge of my lettuce bed last spring. For the first 3 days I saw no tracks near that spot. By day five, fresh droppings sat two feet from the owl. By week's end, a cottontail was eating my lettuce right under the owl's stare. Your results will follow the same path once the surprise wears off.
Rabbits are prey animals that spend their lives reading threats around them. They check for movement, sound, and scent every time they enter your yard. Your owl decoy fails on all three counts for them. It never moves from its post. It makes no sound at all. It gives off no predator scent. Once a rabbit visits your garden a few times with no bad result, it learns the owl is safe to ignore.
This process is called habituation. It's the same reason scarecrows stop working on birds after a while. The brain of a prey animal logs each visit to your garden as safe. When the threat never acts, the fear response shuts off. You can see this happen with predator decoys garden rabbits are meant to avoid. All static visual scare tools share this same weakness.
UW-Madison Extension data backs this up for you. Their review found that lights and sound devices give no long-term benefit for your rabbit problem. Motion tools did much better in their tests. A sprinkler that fires water when tripped stays scary because each blast surprises your visiting rabbits fresh. They can't predict when the water will come, so the fear stays strong in your yard.
If you already own an owl decoy, you can squeeze a bit more life out of it. Move your decoy to a new spot every 2 to 3 days. This slows down the learning process and keeps rabbits guessing. But even with regular moves, a motion sprinkler will still beat your decoy over a full growing season.
I switched from my owl decoy to a $30 motion sprinkler in the middle of that same season. The difference hit me on the first night. Rabbit visits dropped to near zero in the zone your sprinkler covers. That single tool beat my decoy by a wide margin with far less work on my end. You just set it up, hook up your hose, and let it do the rest for you all season long.
You can also pair your decoy with other methods if you want to give it some backup. Place your owl near a bed that also has fencing or a scent spray around it. The owl adds a tiny bit of extra caution for first-time visitors to your garden. But your fence and spray do the real heavy lifting for you behind the scenes.
Your best move is to skip static decoys as your main defense and put that money toward a motion sprinkler. If you like the look of your owl in the garden, keep it as decoration. Just don't count on it to guard your plants by itself. Real protection comes from tools that move, spray, or block access. A fake owl on a post won't do the job for you past the first few days.
Read the full article: 10 Practical Ways to Deter Rabbits in Your Garden