Ivermectin sheep drench is a 0.08% solution = 0.8 mg per 1 ml and is given orally.
Given orally, not topically.
No less than:
1 / 2.2 x 0.2 /.8 = 0.11 ml per pound
No more than:
1 / 2.2 x 1 /.8 = 0.57 ml per pound
1 ml per 22 pounds = 0.5 mg per kg
Example:
22 pounds / 2.2 (converts to kg) x 0.5 (mg per kg) / 5 (mg per ml) = 1 ml
With me so far?
Replace 22 with 1
1 pound / 2.2 (converts to kg) x 0.5 (mg per kg) / 5 (mg per ml) = 0.045 ml per pound
Replace 1 with the 6:
6 pounds / 2.2 (converts to kg)...
Unless you're in one of those states that don't sell syringes over the counter, your feed store should have a syringe.
You will need a one ml syringe.
What are you trying to treat with the ivermectin?