If you’ve had any experience at all in rural areas, you know that autumn is the time of year when mice start looking for comfortable winter accommodations. And what better place than a summer cottage closed up until next spring? This is why cottage owners everywhere have mouse proofing strategies they apply each year as they put their place to bed for winter. The simple, metal “mouse shield” below is a case in point. It keeps mice from getting into the cottage under the door, and it’s been surprisingly effective for more than 20 years.

Why not just install a traditional rubber or fiber door sweep? Mice can easily chew through things like that, but not the metal innovation you can see in the video below. Click to watch.