I'm still using the atty that came with my stick back in June. I have spares but never needed them. I don't clean them, rinse them, blow them out or anything. I occasionally flood the bridge, so I remove the cart and just use the mouthpiece until it dries out somewhat. If I get buildup on the coil, I burn it off using battery power. If this one dies, I'll probably let Janty off the hook for the warranty. If I get 2 or three months for 18 bucks (or half that for the TAWAs), I'm good. Way less than analogs, no matter how much you smoked.