I have just entered the home spraying business (mainly spraying homes for spider control). As I am new to the business I dont want to under charge, the main chemicals I will be using are deltamethrin, and permethrin. I plan on charging $105/ application to homes that are 0-1500sqft. (We are only treating the outside of the home). And $140/application to homes 1500-3000sqft. Anything over 3000sqft will be increased by $12/1000sqft. These treatments are a once a year application. I am located in central WI. Any help would be greatly appriciated.