 But it won't deteriorate the cellulose. It won't make it sink down in the ground. It'll still be there and be visible to look at for a long period of time. You can throw some mulch over the top of it, and it won't be bad, especially since it was cut down flush with the ground. So either way you want to go, potassium bicarbonate by itself or potassium bicarbonate followed by charcoal briquettes.