So they don't bite people? Anything that eats aphids is A Okay in my book! Now, what eats whiteflies? Every single time I plant tomato seeds the darn plants get whiteflies. That didn't happen years ago --- only in the past 6 or 8 yrs.
Thanks Myriam for the explanation. Funny, I never imagined Belgium would be zone 8a. Almost the same as I am yet you're a far more northern latitude.
