With everyone looking to save some money, I've  started doing my own pest control via the internet. Here in Arizona, and many other states you can buy the same chemicals the pros use here in town. One pound of Cyper  will last 40 treatments in and around your home. My expense was $25 for the sprayer and $35 for the Cyper . I pay $36/ treatment and in the winter it goes up to $72/ treatment. Very simple to mix. Ebay has many companies that ship here. I have one that will answer your questions and gives FREE shipping. Type in Cyper Pest Chemical on Ebay.