Does Repellio work in a garage or is it mainly for indoor rooms?

Garages are fine for it, though I’d keep it near where they’re getting in.

I’ve been thinking about grabbing one for my own garage too, so I’m curious how this thread goes. The layout in mine is kind of broken up with shelves and stored stuff, so even if the soundwaves work in the cold, I’m not sure they’d reach the corners where the mice actually come in. I’d probably just pick one up and see, but I wouldn’t expect it to be a one-and-done fix. Seems like something you’d need to position carefully, maybe even move around a few times before it does anything. That’s my main hesitation. I’d rather know that before spending the money.

Cold won’t mess with it, mine runs in an unheated space all winter.

Cold won’t be the issue. My bigger concern would be how much stuff you have stacked in there. Soundwaves don’t travel through clutter worth a damn, so if your garage is packed with boxes and shelving, one unit isn’t going to cover the whole space. Keep it near the problem area and set your expectations accordingly.

I ran mine in a detached garage for a full winter and it didn’t have any issues with the cold. The bigger problem was that I only had one unit and the space was packed with shelves and boxes, so the coverage was spotty. If your garage is fairly open, it should be fine.

I think it depends on how much you’re expecting from it. I’ve had one in a shed-like space and it did okay, but those little guys can be stubborn. If your garage is packed with boxes and stuff, the sound isn’t going to reach everywhere. I’d say try it, but keep a trap or two out as backup just in case.

I’ve had mine in a semi-heated garage for about six months now and honestly the cold never seemed to bother it. What I noticed is that it worked way better once I cleared some stuff away from the walls. I had a bunch of boxes stacked up against one side and the mice were basically just hanging out behind them. After I moved things around and made sure the unit had a clear path to the middle of the space, I stopped seeing droppings in that area. It’s not like they vanished overnight, but it did help. I think the key is just making sure nothing is blocking it, especially in a garage where people tend to shove a lot of junk around. I’d say give it a shot, just don’t hide it behind a shelf or anything. 😊

I actually think people undersell how well these things do in garages. Mine has been plugged into an outlet in my garage for over a year now, and it’s been working fine the whole time. The cold never seemed to bother it, even when we had that rough stretch of freezing temps last winter. I didn’t notice any change in how often I’d see mouse droppings, which was basically never after the first couple of weeks.

The one thing that surprised me is that I think it works even better out there because there’s usually less furniture and clutter blocking the soundwaves than in a cluttered bedroom or living room. I had a friend who used one in a storage room packed with boxes and said it didn’t do much, but that’s kind of on the setup, not the device itself. As long as you’ve got an outlet somewhere near where the mice are coming in, I’d say go for it.

I wouldn’t overthink the cold thing. But for me the bigger question is whether you actually want to rely on it as your only line of defense in a garage. I ran one in my workshop for a season and it seemed to keep things quieter, but I also had a few traps set up as backup. The soundwaves don’t care about temperature, but they do bounce around weirdly if you’ve got a lot of shelving or boxes stacked up. Garages tend to have more clutter than a bedroom, so the coverage ends up uneven no matter what the box says. I’d say plug it in near where you’ve seen the droppings, not just wherever the outlet is easiest. And if your garage is attached to the house, you might want one inside too, because the mice might just move closer to the door instead of leaving entirely. It’s not a bad tool, just don’t expect it to do all the work by itself.