It is starting to sound like a successful treatment! Congratulations!!
I'd treat again in 10 days or so to get the lice hatching out, then follow with regular check-ups.
I asked a poultry specialist with the University of Arkansas about the risks of Sevin. My specific question was if the porous egg would absorb anything bad from the Sevin, but he gave a more general answer. Of course you should not breathe the dust of any poison, but he considered Sevin a very safe treatment.
I personally would not use Sevin as a preventative, only a treatment. I know Sevin has a fairly short half-life, but chickens make a lot of dust and I think you and they will be breathing in Sevin on a regular basis if it is used as a preventative. I am not "organic" in my methods but I do try to watch what goes into me and the chickens. I also don't want to contribute to creating a Sevin-resistant mite or louse. My own opinion. Others are welcome to disagree.
I'd treat again in 10 days or so to get the lice hatching out, then follow with regular check-ups.
I asked a poultry specialist with the University of Arkansas about the risks of Sevin. My specific question was if the porous egg would absorb anything bad from the Sevin, but he gave a more general answer. Of course you should not breathe the dust of any poison, but he considered Sevin a very safe treatment.
I personally would not use Sevin as a preventative, only a treatment. I know Sevin has a fairly short half-life, but chickens make a lot of dust and I think you and they will be breathing in Sevin on a regular basis if it is used as a preventative. I am not "organic" in my methods but I do try to watch what goes into me and the chickens. I also don't want to contribute to creating a Sevin-resistant mite or louse. My own opinion. Others are welcome to disagree.