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Repellent Refill
- Mfg.#
- MR400-12
- Sku#
- 5594981
- Includes 48 hrs of mosquito protection refills
- Each repellent mat lasts up to 4 hrs and each fuel cartridge lasts up to 12 hrs
- No spray and no mess
- Scent-free and diet-free
- Active ingredient is allethrin, a synthetic version of a naturally occurring repellent found in chrysanthemum flowers
* Estimated stock levels as of Thu, Jun 18, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
The Mr400-12 Repellent Refill from Thermacell is a convenient refill system that keeps outdoor areas mosquito-free without sprays or sticky messes, ideal for patios, campsites, and backyard gatherings. Designed for use in fuel-powered repellers, lanterns and torches, each package provides 48 hours of mosquito protection through replaceable mats and fuel cartridges: each repellent mat lasts up to 4 hours and each fuel cartridge lasts up to 12 hours. The formula is scent-free and diet-free, using allethrin as the active ingredient — a synthetic version of a naturally occurring repellent found in chrysanthemum flowers. Compact and easy to swap in, these refills let you maintain continuous protection during cookouts, evenings on the deck, or while relaxing outdoors without aerosol spray or residue.
See package for extended warnings, directions, environmental impact, first aid, and/or storage & disposal information prior use.
Specifications
General
| Type | Insecticide |
|---|
Dimensions
| Height | 9.0 in |
|---|---|
| Length | 12.0 in |
| Weight | 0.1 lb |
| Width | 8.0 in |
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