Do you have any brand names that spinosad is sold as?
I bought captain jacks dead bug brew:
http://www.amazon.com/gp/product/B001VJBYMC?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00
I am way behind on this thread, but I have some important information regarding the use of Spinosad. Please read this entire post. I'm concerned about this product being used incorrectly, which will cause it to no longer be effective.
Here is information on the label of the Spinosad product that I use - regarding Integrated Pest and Resistance Management.
APPLY ONLY ACCORDING TO LABEL. DO NOT USE LESS THAN THE LABELED RATE OF ANY INSECT CONTROL PRODUCT.
Resistance to insect control products is a real concern in CA and elsewhere. UCDavis has reported that "Northern fowl mite is known to
be resistant to both carbaryl and malathion in some parts of California." Carbaryl is Sevin.
I had a horrible infestation of mites last year. I found that they were even resistant to permethrin products. I spent months spraying and washing coops and birds, over and over again. Nothing was working. I finally found Elector PSP, which is a concentrated form of 44.2% Spinosad. This brand, made by Elanco, is labeled for use on chickens and for use for elimination of the northern fowl mite.
Some people, understandably, are trying to find spinosad at a lower price. So they use garden sprays containing spinosad, like Captain Jack's. The problem with this is that the amount of spinosad in these garden sprays is MUCH lower. Captain Jack's is only .15-.5% spinosad. It's also NOT labeled for use on chickens and not for control of northern fowl mites. That means that the directions don't apply to use on chickens for mites.
These less expensive, diluted forms of spinosad may work for a short time - but using less than the recommended effective amount of a pesticide will lead to resistance very quickly.
Using these cheaper garden spray spinosad products will cause the mites to become resistant to spinosad.
I'm concerned about this because of the amount of work and expense I spent, last year, dealing with pesticides that had become ineffective due to over or misuse. Yes, the Elector is very expensive. I don't even have a regular income, so I can't afford to waste money. But, I bought this product because it works and it's made for mite control on chickens. Elanco did the research on chickens and mites to find out what works for them. The garden spray spinosad was developed for use on other insects on plants.
Some people may not realize that Elector is a concentrate. 3 oz makes 10 gallons. So, it lasts a long time. You don't use much. You also only have to apply it to the vent. Make sure the skin is saturated around the vent. You don't have to spray their wings etc. You only have to give them one application for it to work. So, you use less product than with other sprays. You do have to spray the roosts and coop to make sure you get any mites in the environment. Again, one treatment works.
Please share this information, whenever the subject of spinosad comes up. If you can't afford a form of spinosad that is labeled for use on chickens for fowl mites, please use something else. Otherwise, you are contributing to the development of mites becoming resistant to spinosad by giving them small doses. I don't want that to happen. Spending months treating over 100 chickens over and over again is brutal.
Thank you.