Avid breaks down in about 45 days, I think Floramite is about the same. Pyrethrum, soapy water, rubbing alcohol, neem oil, they all will kill mites, but they will not kill the eggs. You can kill every mite in your garden with a pyrethrum fogger but 6 hours later more eggs will hatch and within days those will lay more eggs and so on. If you have a small garden and are able to spray daily AND make sure you got every single mite then you may be able to get rid of them. Miss one mite and you'll soon be back to where you were. Avid gets absorbed in the leaves and makes the leaves deadly for mites, as soon as the eggs hatch the mites die the first time they eat lunch, whereas Floramite actually kills the eggs.

Nobody wants to use toxic chemicals but sometimes it becomes a necessary evil. I tried EVERYTHING to get rid of them for months, every time I thought I got rid of them they magically reappeared weeks later. I personally dont think there is anything to worry about of using Avid in veg. From the time a plant is put into flower until it is consumed almost 3 months have gone by. I dont think that can be said about most fruits and vegetables you buy, unless they are organic you can be sure they've been sprayed with some shit weeks before.