They are so persistent too. I have this conversation a few times a year.
Guy: we can spray and kill all the bugs in your yard
Me: no thanks, the bugs are there so the birds have something to eat.
Guy: we use an organic compound that won't hurt the birds.
Me: NO
Guy: do you have spiders in the house?
Me: yes there are a few.
Guy: We can spray...
Me: no, the spiders are there to catch the flies and centipedes that make it inside. I don't need your help because everything functions like it should.
Guy: confused look on his face