I just had that today, except that it was a woman. She told me that "many" of my neighbors were using it. When I asked who, she gave me 3 names. Told her I never heard of them, and then she told me they lived in a cul-de-sac "over there" (waved arm generically in a direction). I don't think there are any other cul-de-sacs other than ours in the area. She told me that it was much cheaper than than Terminix or Orkin....uhmm, the houses in the neighborhood are $2m+....does it look like the owners care about a $25/month difference in pest control? Weird, didn't seem that legit to me.
And then she topped it off by asking me if my husband was home to discuss it with him. I told her to leave and not come back.