Man, good luck to you. I was just going through this same situation and was looking for good info.

I've heard some people spray neem throughout flower and just stop like 3-4 weeks before harvest. I'm not risking it though unless I have to. You can also apply the neem solution by sponging it on each individual leaf... very time-consuming though I'm sure.

I'm with you on the predatory mites though. If I saw any sign of spider mites in flowering I was going to immediately get some. Can you buy them locally in CO? I've seen you in the CO section...

Also, is there anyway you could move your plants to a smaller room during night cycle? Probably not I'm guessing, but I've heard of people putting their plants in a confined space with a NPS while they're still small. If I were you I'd try like 2-3 NPSs in there. Sounds like you've got it sealed since you're using CO2. I also wouldn't have the oscillating fan on at all. If you must - and I think you said you must for heat issues - don't point directly at the NPS. These things work by diffusion and don't need any additional wind current on them. I guess it may help it emit the vapors faster? Not sure. But I think the stagnant air helps give a longer contact time between the mites and the dichlorvos. When dealing with toxins like this the contact time is extremely important. You need that cloud of dichlorvos building up in the room, rather than a stream of dichlorvos whipping around your plants.

I've heard a few people say that NPS don't work, but I think if you use it like this it will work. You may have to sacrifice optimum environmental conditions (no fans, excess heat, etc) for a few days, but it may be worth it if you don't have another means of control. I'd do it now before the plants start flowering too much and moisture/humidity becomes an issue! Fans off now won't be as big a deal as fans off in 3 weeks.

Lastly, although dichlorvos is pretty toxic, I'm convinced that it's pretty safe to use (if used properly) up until maybe 3-4 weeks from harvest. A lot of people will disagree, but I've read some toxicity studies and other links and I'd be comfortable smoking buds with NPS usage 4 weeks from harvest. Dichlorvos breaks down in sunlight (and wind/water also I believe). I'm sure the HPS does a number on it. I've also seen studies where it says dichlorvos is not taken up by plants. So, if it's not IN the plants and can't remain viable for long ON the plants, then it's not an issue.

However, I have heard of people using these in the fuckin' drying room!! And I think that is just wrong if you're selling the buds! They won't be exposed to sunlight, wind, or water anymore at this point and some dichlorvos could easily remain in the buds. The levels would be so low that it'd probably be harmless... would probably also be destroyed as you went to light the buds... but it's an unpleasant thought nonetheless.

Good luck! I hope you get those bastards wiped out!!
lampost Reviewed by lampost on . Which predatory mites? Howdy all, So I'm officially two weeks into flower today. However last Saturday I woke to spider mites on one of my plants! I rushed it through emergency treatment (cold rinse, mild plant safe soapy wash, Hot shots bug strip, MASS CO2 for 3 hours and,... Neem oil). This morning I did my normal hour inspection for mites on the flowering plants, just to see one mite(first sence treatment). Today is the final day I can spray Neem oil. So I've been thinking predatory mites to safeguard Rating: 5