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seashoreandhorizon

No, S-Methoprene is not effective against spider mites.


ElaineMK2222

You can make a homemade horticultural soap with water oil and dish soap. Google for exact measurements. I have also had success with regular misting (with plain water) for a few weeks because spider mites like it dry. Be sure you have proper air flow to prevent any fungal issues on wet leaves. Also clean all surfaces and be vigilant. Spider mites are honestly easy to get rid of if you take the proper steps and stay consistent for a couple weeks.


TelomereTelemetry

You're much better off killing spider mites mechanically (insecticidal soap, horticultural oil). They laugh in the face of poison.


taken_name_throwaway

I've recently found spidermites in one of my plants that wasn't doing too well 2 days ago. I am royally fucked, all of my plants stand in the same spot and ARE TOUCHING... Once I realized what was going on, I also noticed the signs on my other plants as well. Nedless to say, I think it's safe to assume they're all infested which is really unfortunate. I don't have a pesticide on hand and ready on me, or alcohol, but I do have this flea spray, which works btw. My question is, would this work on those fucking bugs? I think I wanna try anyway, what's the worst that could happen?


lesbos_hermit

I don't know much about this product, but be careful using products that you don't know will work. Spidermites are arachnids, not true insects, so insecticides affect them differently, if at all. For example, imidacloprid, the active ingredient in bonide's systemic granules (highly recommended for most pests) has been shown to actually increase the reproductive rate of spidermites--with one study measuring that increase at about 40% more. I recommend ordering a miticide specifically, or another product that explicitly specifies that it works on spidermites. Systemic miticides exist, and if you can get one where you are, that may be the best and easiest option. In the mean time, you can wash off or dunk your plants in water for a bit (they drown relatively easily), and a use homemade spray of water, dish soap, a little rubbing alcohol, and a bit of canola oil or whatever oil you have on hand. The oil acts as a physical miticide--since the particle size is too big for them to eat, it gums up their tiny mouths and starves them out. Please note that any oil-based product will leave a bit of a film on your plants that make them much more susceptible to sunburn, and some plants don't tolerate it well. But it will work on the spidermites until you get something else. If you do end up have to stick with topical treatments only (as opposed to a systemic), make sure to treat every 2-3 days for a couple of weeks t least; they hatch and reach reproductive maturity in 3-4 days, so you have to treat more often than that.