I have a customer with a little more than a half acre of grass. She wants me to spray the weeds in the lawn and kill them. The thing is, her lawn is completely covered in weeds! How should I price this? I was planning on charging $500, which covers a second visit to re-spray the weeds that didn't die. Does this seem like a reasonable price? I seldom spray pesticides, so I do not know much about pricing. All I can tell you is that spraying their whole lawn will take A LOT of man hours!