Mites / Do I have to replace sand in run?

[sweetpumpkinfarm]

Could be lice eggs if they look like little white qtips on the base of the feathers.

Possible, they have all hatched and been eliminated with your treatments. As far as I know, the eggs are viable for a long time and dusting or spray will not penetrate the eggs, so you may want to check frequently for any lice that have hatched.

thank u!