finchescb
S76 is safe for parents and chicks. It is added to the water, the parents feed it to the chicks, therefore the mites die when they bite the chick. Mites on newborns is a big concern so I would get your hands on some ASAP as they will suck the babies blood and could swarm on them I dont know if that spray is safe for newborns.
You didnt spray it directly on the chicks I hope.
Heres an article and measurements for dosage in their water.
http://www.ladygouldianfinch.com/product_s76.php
Use for 2 days, then you have to use it again in a week for 2 days......then a 3rd time after the 3rd week has passed to make sure the remaining eggs that hatch dont re-infest the cage.
This is why it is very important to sanitize grasses, sticks and branches from outside before you introduce them to your flights. Use raw vinegar and soak anything you bring in and let it dry before it goes in. Sanitize your hands after handling anything from outside. All these things can bring in mites
The parents are going to need fresh mashed boiled eggs and lots of millet to keep the baby's crops filled.
Spray the cage down with your spray in a way that causes the least amount of disruption to the parents, or they may panic and toss/abandon the kids. I suggest spraying it into a cloth and wiping things down so to the parents you appear to just be doing a "routine cleaning" rather than shooting spray all over the place with the scarey spray bottle.
Work quickly, but smoothly and calmly in a way that keeps your parents busy munching on eggs and treats while you stealthily get the job done.
Let us know how the babies are.