feedback on triple threat predators..

I've growed for few yrs. and recently have had spidermite problems...and they are a bitch. If you've had em you know what I mean. Well anyway decided to order TRIPLE THREAT PREDATORS (unit 1000). They been released into my garden for 1 week now. Too early to tell if its working, However I do have a friend who told me he bought these predators in the past and they didn't do crap and he purchased 1500. So have anybody tried these particular predators b4?? :mad: fuckin mites