You can also pair with a light-up leash!

Promising review: “I have two black dogs and live on acreage on a dirt road. One tiny 10 pound blind mutt, one black lab. These light up collars live near our door and go on the dogs any time they go outside when it’s dark. Even if they’re wearing another collar. I can lose the 10 pound dog behind a tree in the middle of the day, imagine how easy he is to lose at night! Plus, it gets cold here and I get lazy and many times they go out alone. I always put the little dog’s collar on flashing mode. The blinking red collar was especially helpful when the Amazon driver showed up unexpectedly late one night. These have worked better than other options we’ve tried. Easier to put on and take off, easier to turn on and off as well. Just hold down the button for a second or so. We’ve used them for two years now and had no issues. We charge overnight when they die, but the charge seems to last for ages. Seriously, one of my favorite products ever. Now, if I could track my dog as well in the daytime, that would be great.” —Happymomcm

Get it from Amazon for $21.99+ (available in sizes XS–L and 10 colors).

Source: https://www.buzzfeed.com/amberusher/problem-solving-products-for-pet-issues