[Mr.Hades]

Growers should use caution when dealing with NPS because of its toxicity to humans and animals. You shouldn't use "No-Pest Strips" and other products containing Dichlorvos on flowering plants because of its chance of leaving residual amounts of the active ingredient on your plants. Dichlorvos (The active chemical in No-Pest Strips) is considered a carcinogen and if used with your plants, it should only be used in the vegetation cycle and plants rinsed with water before flowering so you dont have a chance of leaving chemical residue on your harvest if possible. The active chemical (Dichlorvos) can be rinsed off and breaks-down in water but is also a dangerous insecticide and should NOT be used in living areas where people have a chance to inhale the chemical. (People growing in their homes with children, pets etc.)

There needs to be a sticky thread about this because I seem to see plenty of people on the internet using these things improperly.

Info about Dichlorvos:

https://www.atsdr.cdc.gov/tfacts88.html

https://envirocancer.cornell.edu/Fact...dichlorvos.cfm

https://safe2use.com/poisons-pesticid...dichlorvos.htm

*****This is NOT a thread to discuss the effects of Dichlorvos. It is simply a thread to give caution to those using NPS.

Im not telling you NOT to use them... I have used them myself and still do. They are a very fast, easy, and efficient solution to get rid of spidermites. I am asking you to be cautious because it is a dangerous chemical like most chemical pesticides. The only reason I am posting this is because I have been reading how people are using these things lately. (using them in closet grows where people sleep etc.) I actually noticed this a couple years ago, but even more now.

When used, they shouldn't be used in rooms where people and animals will be, and make sure too use no and/or low ventilation for no more than 7 days... Then plants rinsed off with water to break down the active chemical if there is any possiblity of leaving a residue. The NPS makes your grow room a little gaschamber for the mites and will kill them dead.

[mikessong]

i second the motion to make this a sticky

[Phillthy]

They tell you not to use them anywhere where a human will occupy the space for more then 4 hours a day.

[Haps]

I put one in bloom at the start of 12's, with all the fan action, it is mostly depleted in a week or two. 8 weeks later at harvest there is none left. Everything can kill you, used carefully, these are not a problem. I can see how it could be, used too much or late in flower. Better than the fucking borg.
H

[Mr.Hades]

Originally Posted by Phillthy

They tell you not to use them anywhere where a human will occupy the space for more then 4 hours a day.

Yes, they do... But I have read of many who use them throughout the grow as a preventative... Inhaling fumes as their plants grow... And many use them throughout the flowering process. Then the buds get smoked with trace amounts of this active chemical on them. Inhaling combusted chemical fumes of this kind cannot be good... Even in trace amounts.

Yes, It may keep out pests, but what could it possibly be doing to your health?

And using them with a fan and ventilation kind of defeats the purpose of using them as a pesticide because it takes a little while for the gaseous fumes to build up in the room... It turns your growroom into a tiny gaschamber of Dichlorvos which kills the pests quickly. And it doesnt deplete in a week or two. Ive had peststrips that Ive had to use a few times that lasted more than a year. Thats why they used to put them in office buildings, schools etc. because of the low-maintnence.

Im not telling you NOT to use them... I have used them myself... They are a very fast, easy solution to get rid of spidermites. I am asking you to be cautious because it is a very dangerous chemical. The only reason I am posting this is because I have been reading how people are using these things lately. I actually noticed this a couple years ago, but even more now.

If used, they should be used with no or low ventilation for no more than 5-7 days... Then plants rinsed off with plenty of water to break down the active chemical if there is any possiblity of leaving a residue.

[The End Is Near]

I think this is just fearmongering due to the fact that dichlorvous gas is chemical based. I MIGHT be wrong, but consider this: Dichlorvous gas was toned down in concentration over the years to be safer, and has not once been observed(by me at least) to be harmful to plants. If it was as bad as the anti-NPS people said, we'd have well documented cases of poisoned plants. I've never even seen or heard of a plant reacting in the slightest to a NPS.

Yet MANY people have fucked their plants up with natural products like neem, homemade brews, other anti mite spray. Not only that but they're more expensive, more tedious to use, and nowhere near as effective as the mite-genocide that NPS bring.

I've said it before, NPS should always be the first step in killing mites and other pests, for they are unmatched in price, effectiveness, availability(home depot/lowes), and ease of use. The one and only thing I've heard negative is that some places like CA have NPS resistant mites.

[Phillthy]

Hades, you make a lot of valid points. Any pesticide is going to be harmful in one way or another. I would not have one hanging in my kitchen. As a matter as fact I only place them in my grow room a week at a time depending on what i see (1 gnat, fly, etc.). lol.

[jack DA reaper]

Originally Posted by jiggywhompus

Shell the producer of no pest strips in the late 70s settled out of court many cases of people getting very sick from the use of dichlorvos no pest strips.

https://www.jimhightower.com/node/1786
https://whatever.losito.net/2007/03/0...no-pest-strip/
https://www.ringnebula.com/project-ce...93-story24.htm

I would never use the damn things.

Its a neurological toxin i thought

Hot Shot No-Pest Strips work wonders on spider mites, but as always, you should be mindful of what you're adding into your grow.

[Mr.Hades]

Originally Posted by The End Is Near

I think this is just fearmongering due to the fact that dichlorvous gas is chemical based.

I've said it before, NPS should always be the first step in killing mites and other pests, for they are unmatched in price, effectiveness, availability(walmart), and ease of use. The one and only thing I've heard negative is that some places like CA have NPS resistant mites.

I dont think it's "fearmongering" at all... Just facts... There have been plenty of studies... Which is why they are no longer used in public offices, schools, etc. I dont wear foil on my head.

Yes, They're are a very good way of removing pests, This is not what I am trying to get at. This is already known. And no where in this thread have I said they were harmful to plants. I say that they should NOT be used on flowering plants for a simple reason, You are putting trace amounts of carcinogenic chemical residue on your harvest. You probably dont notice, but it can't be very healthy.

I am simply trying to set a warning that can be viewed by all so that they know what they are dealing with.

And fyi, "NPS resistant mites" are not found just in CA. Spidermites can adapt and become immune to the chemical anywhere if used incorrectly to dispose of them. I believe this happens when the NPS are left in the rooms for long periods of time with regular ventilation as preventative measures which causes a low enough concentration over a period of time for the mites to simply get used to them. Its no different from how they grow resistant to other insecticides.

Like I said, the correct and safer way to use NPS to get rid of mites is to use them in a room with no ventilation for 5-7 days or until there are no signs of pests... Then you simply remove the NPS and rinse your plants thouroughly after.