Thermacell Patio Shield Mosquito Repellent

Absolutely fantastic at keeping the bugs away but, have had 2 now that slowly get gummed up where you turn on/off/light to the point it is difficult to turn. The first lasted 2 years and died the slow death. Then came number 2 which lasted 10 months with same story. I just received number 2 replacement and I hope I can get 2 years out of it. You find a product that works, and Thermacell not only make the replacements expensive but then clip you again for whole new unit in an obscenely.short amount of time they last, not yet allow them to become unusable, keep the shareholders 😎 UPDATE! 2nd purchased unit on/off/light getting gummed up to make it close to impossible (already had one that died in same manner) now in find it leaking some what looks like black tree sap (see photo) PROTECT YOUR FURNITURE!