The latest edition to the Thermacell line, Patio Shield Repeller - Blue is a compact and stylish device that will look great on any patio or deck while it works to repel pesky mosquitoes.  Thermacell protects millions of people from mosquitoes with no messy sprays or lotions, no odors, no noise, no DEET, and no open flames. Includes MR-PSB and one single pack refill.