This will hold about 1 quart of water. It doesn't take very much of this mix to worm birds. I have found out the hard way that most wormers will kill the fertility in eggs for 7 to 10 days. We have always used the eggs for cooking I am over 60 and still going today - don't know about tomorrow. The other thing I do for winter is to de-mite the birds if they have any.
Birds are good at bringing in mites or lice.
I wait 10 to 14 days after worming with Levasole. Ivomec will kill any blood sucking parasite and does a fair job of worming. It will kill leg mites also, 6cc per gallon of water. 6cc per gallon of water. You will have to repeat this 2 or 3 times.