Introduction
The Thermacell Patio Shield Mosquito Repeller is designed to effectively keep mosquitoes away by creating a 15-foot protection zone around you. This portable device works fast, achieving maximum protection in just 15 minutes, making it ideal for use in backyards, poolside areas, patios, and other outdoor spaces. It offers a DEET-free, scent-free, and flame-free alternative to traditional bug sprays and candles.
The proprietary formula is independently tested and EPA reviewed for safety and effectiveness, ensuring it is people and pet friendly for outdoor use only.
What's Included
Your Thermacell Patio Shield Mosquito Repeller package includes:
- One (1) Thermacell Patio Shield Repeller (Graphite color)
- One (1) 12-hour fuel cartridge
- Three (3) 4-hour repellent mats


Setup
Setting up your Thermacell Patio Shield is quick and easy:
- Insert Repellent Mat: Slide one 4-hour repellent mat into the top opening of the repeller.
- Twist in Fuel Cartridge: Remove the cap from the 12-hour fuel cartridge. Insert the cartridge into the bottom of the repeller and twist it securely into place.
- Rotate to ON and Start: Rotate the base of the repeller to the "ON" position. Then, click it to "START" to ignite the fuel.
- Check Indicator: Look for an orange glow in the view window on the side of the device, indicating it is active.
- Allow Zone to Form: Place the repeller in the center of the area you wish to protect. Allow 15 minutes for the 15-foot protection zone to fully form.


Operating Instructions
For optimal performance and continuous mosquito protection, follow these operating guidelines:
- Replace the fuel cartridge every 12 hours of use.
- Replace the repellent mat every 4 hours, or when it turns white.
- Always place the repeller in the center of the area you wish to protect.
- On windy days, place the repeller upwind so the repellent is carried towards you.
- Ensure the orange glow is visible in the view window to confirm the device is active.

Maintenance
The Thermacell Patio Shield Mosquito Repeller requires minimal maintenance. The primary maintenance tasks involve replacing the fuel cartridges and repellent mats as indicated in the operating instructions. No other specific cleaning or servicing is typically required.
Troubleshooting
If you encounter any issues with your Thermacell Patio Shield, please refer to the official Troubleshooting Guide for detailed solutions. Common issues may include the device not igniting or the protection zone not forming effectively. Ensure all components are correctly inserted and the fuel cartridge is not empty.
For a comprehensive guide, download the official PDF: Thermacell Troubleshooting Guide (PDF)
Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 3.4 x 3.4 x 6.5 inches |
| Item Weight | 9.6 ounces |
| Model Number | MRPSL |
| Scent | Scent Free |
| Material Feature | No Spray Mosquito Repellent |
| Protection Zone | 15 feet |
| Fuel Cartridge Duration | 12 hours |
| Repellent Mat Duration | 4 hours (each) |
Warranty and Support
Thermacell offers a 100% Satisfaction Guarantee. If you are not completely satisfied with your Thermacell purchase, you may return it for repair, replacement, or refund. The product includes an automatic 1-year warranty, which can be extended to 2 years with registration.
For customer service, you can contact Thermacell 24/7 at service@thermacell.net or by calling 1-866-753-3837.
For additional information, you can refer to the User Guide (PDF).
Safety Information
Important: Keep out of the reach of children.
Active Ingredient: D-cis/Trans Allethrin 21.97%; Other Ingredients 78.03%; Total 100.00%.
For outdoor use only.