I agree and while I’ve not bought them, I regularly see them around my plants and then for days they’re gone. Eventually I'll see a few back but not too many at one time. While I have seen them procreate, eat and return, they're in low numbers. I’m not sure they get everything there is to eat of the bad bugs. I guess they have too many options and as you say with wings they can move along or be gone for good …… I've bought Ladybugs before and will probably do the same this year. Bad thing about them is they tend to fly away. …
Careful you’re dating your self lol, … I also use to see a lot of Mantis as a youth and don't see them now. That said, I was talking to an old FL cracker the other day mentioning this and he told me the Everglades are full of Mantis and egg sacks, dis brought a sparkle back to my eye … long live da Mantis mon \o/Things in my area sure have changed from when I was a youth . Besides the air not being as clean and I'll never see 50 cent a gallon gas , I use to see Horned Toads , Lady bugs , and the Pray Mantis , and all kinds of creatures that no longer seem to be around.
Peace,
P.Dreadie
BTW how long do they stay on your plant? Or will they move onto other plants bushes as they've eliminated their bug food supply and do they eventually take off hunting more bugs leaving your pepper plants unprotected?