Yes you were clear. The answer is dependent on the dosage you used as there are various dosages recommended for the level of infestation. In the United States, a withdrawal period of 3 days is considered sufficient in most cases.
If you don't mind ingesting remnants of a thiamin blocker, you...
Trying to figure out why 3 died. Did they have a case of coccidiosis which prompted the treatment?
It would be a brilliant idea to know why 3 birds died so suddenly before eating.
What state are you in? You can quickly get a diagnosis at your state poultry lab if you have a refrigerated...