The Instructional DVD focuses on Sales & Application. The sales portion focuses on using the Sales Demo Kit to effectively sell Tile & Grout restoration services. The key is to present your customers with options and to set a realistic level of expectation for each option. Click here for more details. The application portion focuses on the most common pitfalls, having the necessary tools to be efficient, and various methods of application ... for walls, cove base, small tiles, & large tiles.