Spider mites actually thrive if you use some poisons.
Don't use it if you have them.
Link:
http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7405.html
Quote:
Chemicals
Spider mites frequently become a problem after the application of insecticides. Such outbreaks are commonly a result of the insecticide killing off the natural enemies of the mites, but also occur when certain insecticides stimulate mite reproduction. For example, spider mites exposed to carbaryl (Sevin) in the laboratory have been shown to reproduce faster than untreated populations. Carbaryl, some organophosphates, and some pyrethroids apparently also favor spider mites by increasing the level of nitrogen in leaves. Insecticides applied during hot weather usually appear to have the greatest effect on mites, causing dramatic outbreaks within a few days.
If a treatment for mites is necessary, use selective materials, preferably insecticidal soap or insecticidal oil. Petroleum-based horticultural oils or neem oils are both acceptable. Do not use soaps or oils on water-stressed plants or when temperatures exceed 90°F. These materials may be phytotoxic to some plants, so check labels and/or test them out on a portion of the foliage several days before applying a full treatment. Oils and soaps must contact mites to kill them so excellent coverage, especially on the undersides of leaves, is essential and repeat applications may be required. Sulfur dust or spray can be used on some vegetables, but will burn cucurbits. Do not use sulfur dust if temperatures exceed 90°F and do not apply sulfur within 30 days of an oil spray. Sulfur dusts are skin irritants and eye and respiratory hazards. Always wear appropriate protective clothing.
Spider mites killed my whole garden this year.
Nothing worked-Soap,Neem,Malathion,Bayer Systemis(and 2 other poisons by their Co.)
Only a few things slowed them down a tiny bit.
Once the temps. got 80 degrees+ there was no winning the war.
Bennificials just end up dead in the mites webs...Lacewings,Ladybugs(even 1 that only eats mites.Didn't try the mites that only eat mites-temps were too hot for them at the time.
Might get some of them this spring...to try and make sure the mites are gone.
Miticides can't be used on food products,at least the few I found at the nursery.
I have the fertile females(red) on my plants now waiting for warm weather.
38 dgree nights didn't faze them with rain either.
I gotta find something to make sure my grow area is completely clear of mites before I can start anything.
Suckers are hard to deal with.
Mites suck
Before/early infestation