Wood Burning Stove Glass Cleaner Spray 500ml 5 "Excellent product" Mrs Lesley Nottley 20 April 2018 I don't often write reviews, but having just given my woodburner its annual clean I felt I should say how much easier this product made it. I used to spend a long time and a lot of elbow grease getting the glass clean, but not any more. The black residue is just dissolved, which you can then wipe it off with a damp cloth. No more scrubbing! It's still a messy business and you need to protect the floor/hearth beneath, as the cleaning liquid drips a bit, but it was all done and clean in a fraction of the normal time. Quite expensive but definitely worth it, and will last for years.