Since nobody around here wants to spray my yard, I have decided to buy a sprayer and do it myself. Tractor Supply has one for around $300. Is this the going rate? When and what is the best thing for me to get to kill weeds? Mostly dandelions, crabgrass, hen-bit, and clover type weeds. Don't think I can get the same thing as the pros do but want something better than what I can get at Lowe's....etc if possible. I live in Oklahoma. So if anybody from around OKC can give me some help, I would really appreciate it.