Pool still dirty outside. Well you know summer has been gone already 3 months ago, why not a make a change! Usually takes 30-40, worth your time doing this. Try to rub off the dirty chemicals in the outside interior of the pool. Pool Brushing process is finally back! I have recommended them to every pool service company as well as every pool homeowner. In the plaster business it is imperative to thoroughly brush a newly applied plaster finish every day for at least the first 2 weeks. This product will certainly assist in the chore and is, as you claim, a time saving device - Jason