The diptron insecticide your vet gave you contains Fipronil - the active ingredient in Frontline. I have also used Frontline spray on my girls, but the puppy / kitten version, as I have read bad reports about it affecting chickens if it is too strong or you use too much. As with many things, some people swear by it, others tell of bad experiences using it.
If you are nervous about using the diptron directly on your girls, you can still use it in the coop - as well as spraying the birds it is a good idea to spray the perch and nests when you let them out in the morning, to kill any lice that are hanging about there.
Keep an eye on them, and retreat in about 7 days (and then again 7 days later if you want to be really, really certain!)
If you are nervous about using the diptron directly on your girls, you can still use it in the coop - as well as spraying the birds it is a good idea to spray the perch and nests when you let them out in the morning, to kill any lice that are hanging about there.
Keep an eye on them, and retreat in about 7 days (and then again 7 days later if you want to be really, really certain!)