Done burning our first ton of pellets already this season so we did our regular weekly cleaning and did a vent cleaning w/LBT also. I am so happy to be done with those lousy ashy pellets and back to the good pellets. The vent was horrible. When we did the LBT after all season last year hardly anything came out of it. It was sure loaded with ash this time. Never again will I buy a cheaper ton of pellets just to save $25.