Here is an interesting product: Animal Repellent.

It makes use of the principle that animals dislike light.
And it emits red flashing lights at night, imitating the eyes of predators.
This can effectively prevent wild animals at night, such as coyotes, deer and raccoons, and protect your property safety.

Equipped with solar panels and rechargeable batteries,
this deer repellent device charges during the day and activates at dusk.
The flashing red lights protect farm, or livestock from wildlife without the need for manual operation.

Simply press the outdoor coyote raccoon deterrent's power button to start.
Install it on trees, posts, or fences at various heights to target different animals.

Specification:
Waterproof: IP44
Material: ABS
Size: 8.6*8.8*3.5cm