You can save the unused spray. I've had a bottle well over a year and it is still effective.hello is there a waiting period on eating the eggs after spraying Permethrin 11 on the chicken and if so how long is the waiting period and i have so much left of the Permethrin 11 it say 2oz per 3gallons of water! i have only 13 chickens and one coop/ rabbit barn/ dog house and i used only 1 gallon of of the 3 gallons can i save the other 2 gallows or what and i need to know about the eggs ty
No idea about waiting period, but if I had to guess I'd say no, based on how permethrin works. I can put it on my clothes and is still effective up to 6 washes, so it's not likely to be wearing off their feathers.