The Grass Doctor

where can I purchase a 20 gallon hose-end sprayer in the fairview park, ohio area? I'm using Jerry Baker's lawn care system and it requires a 20 gallon hose-end sprayer.

Jerry Baker Bood, page 263,mentions Plant Shampoo, is that something that we mix or is something I must buy? I need to prepare the Summer Lawn Soother, I live in Texas and the heat is great and don't want my lawn to be burnt the the sun. I need to know about the Plant Shampoo, that's all I need to start early in the morning spraying this formula to take care of my yard. Page 263 of the Great Green Book of Garden Secrets. Thankx in advance for any helpful answer.