I've only had this for a few weeks and have stopped using it. I had to tape this to the table on which I placed it, or it would constantly topple over, as it's top-heavy and its balance is way off. It gets filthy incredibly quickly, getting covered with a residue like an oil-spill. And even using the correct cones, the incense smoke does not travel down the burner, like in the picture. I'm now just using my cones in a small round bowl.