Works Well, No Instructions [SEP] There are no useful instructions on how to use this product. For something like this it typically matters how long it sits or if it is left to dry out. I took a guess and let it sit for one hour. I applied a line of the gel over the threshold of the shower where the door seal sits. This area often accumulates mold. The smell is not as strong as other cleaning solutions I have used, but there is a light chemical smell. It comes with a pair of disposable gloves but I did not use them. Since it is a gel it is fairly easy to handle without making a mess. After one hour I wiped it clean with a damp cloth. On the tile it works about the same as soap and water. It still required some scrubbing in certain areas. On the door seal it performed much better. The areas where the gel was applied cleared up not only the mold, but also the soap scum which would not wipe away with just the wet cloth alone. Overall it seems to work fairly well, but it is hard to say how well with no instructions provided. It may take some trial and error to maximize the performance of the gel.