Gary tackles two pressing homeowner concerns. First, a listener asks about slippery stair treads and the best way to make them slip-resistant. Gary recommends using a clear sealer, like Track Safe, to prevent accidents. Next, a homeowner shares their struggle with moss growing between pavers, and Gary suggests using Wet and Forget to kill the moss and polymeric sand to minimize future growth. He also advises on the importance of proper sand and sealer selection.