Think I lost my Tomato Hornworms...

I haven't seen my Tomato Hornworms since a recent yard cleaning. May be for the best since the tomatoes on the "scrap" tomato plant growing out of the bottom of the composter look better than the tomatoes growing on my 2 "gardened" tomato plants - I think I'm pampering the wrong plants. Anyway, its unfortunate that I lost the Hornworms, I was looking forward to seeing the moths (info here as a refresher).