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If you’re planning to spend time outside this summer — or any time of year — you’ll want to keep bugs at bay with the Thermacell E55 and EL55 Rechargeable Mosquito Repellers. These mosquito repellers provide a 20-foot zone of protection that is invisible, scent-free and silent, and right now the devices are up to 28% off for Prime Day.

Shop these Thermacell deals below, then be sure to dive into our top picks from all the Prime Day deals.

Perfect for those who hate bugs but also hate bug spray, the Thermacell E55 is a small and effective repeller that can keep you bite-free.

This repeller gives you a 20-foot zone of mosquito protection plus a dimmable light for gathering on the patio.

Alternatives like the best bug sprays certainly provide a barrier of protection, but the odor and residue are major turnoffs. On the other hand, the ultra-portable Thermacell E55 weighs just 12 ounces and is powered by a rechargeable lithium-ion battery with a five-and-a-half-hour life that works to heat and diffuse mosquito repellent into the air. More about that repellent: Contained in a liquid solution cartridge, it comprises an active ingredient of metofluthrin (5.5%) and contains petroleum distillate but has zero DEET or citronella.

And if you’re looking to light up evening gatherings, the EL55 features all the benefits of the E55 plus a built-in light with a brightness of 50 to 200 lumens and a battery life nearly double that of the E55 at nine hours. If you run the repeller with the light on at the same time, that battery life goes back down to five and a half hours.

This device is a must-have for outdoor grilling, lounging and entertaining, so shop these Thermacell deals now and save your skin.