Ever tried this worming formula ? No withholding period

[Chicken Woman]

WORMING POULTRY
1st - Mix 1oz of Copper Sulfate to 1 gal of water to make concentrate-mix 24oz of concentrate to 5 gal of drinking water. -Treat layers for 3 day then off for 3 days. Re-treat as necessary.
2nd -Mix 1part D.E. (Diatomaceous Earth) + 1 part Fresh ground Garlic + 1 part Cheyenne Powder or fresh ground. Top dress feed troughs with mixture to layer feed 2 consecutive days per week for 3 weeks.
This will take care of the problems with no withholding period.

 

[Dustoff79]

I am not sure the copper sulfate is a good idea, though not "highly" toxic to birds, it is toxic and does not break-down so it will remain in soil or water if contaminated. I would suggest the DE (food grade) as a better alternative.

http://extoxnet.orst.edu/pips/coppersu.htm
see MSDS http://www.oldbridgechem.com/msdscuso4.html