Red spider mites

[Scuttlebug]

Does anyone know how to remove these little bastards for ever from a conservatory? We moved in last year, no probs, but this year, everything but the tough cactus has been ravaged and ruined by spider mites. It's a south facing conservatory so it does get hellish hot and I'm worried some of my plants I bring in to over winter will be hit too.
All advice and sympathy gratefully received!

Haven't tried it because my greenhouse doesn't suffer (touch wood) but here's the first idea I'd go with natural predators

Thanks Snows, I'll look into those...they sound a bit icky though, itll be carnage in my cons, albeit on a very microscopic level!

The biological controls work really well - we've had the predatory mites from Defenders who I'd thoroughly recommend, they're really helpful on the phone and will always advise.

We've found that where we've treated a tunnel it seems to avoid spider mite the following season as well, so although it is expensive it is very worthwhile.

I'm sure you know this but of course keeping the humidity up (and if possible the temperature down) does help a lot as well.