2 months ago I had to have the perimeter of my home treated by termanix as I am deathly afraid of Cockroaches. Since then, I have avoided collecting the bounty of whiteflies I have in my back yard. My questions are: are these whiteflies or any backyard insects no longer a good food source as I spray the perimeter of my home every 3 months? How far does the spraying go? Thank you much again-maggie

