We burn whatever we cut on our place, cedar elm, and mesquite primarily. But one of the guys in town was saying how terrible the mesquite is on my stove because of all the creosote it makes. Really? Is this true? We clean the pipe three times a year. At the end of the season, beginning of the season and in the middle. And there isn't much buildup at all? We love burning with it, it burns long and hot. I like it better than oak actually. It takes a while to season, that is probably its only downside. I am thinking creosote would be a problem using freshly cute mesquite and I am guessing he is using green, smoldering stuff instead of nice dry stuff.