The pour on, you dab it under each wing and a couple on the vent with a cotton swab. Dosage is not that critical apparently. It is not very toxic this stuff.
I also corrected the dosage to ccs not teaspoons.
The pour on is supposed to kill mites and lice better while the injectable is supposed to kill internal parasites better.
I like what happy chooks said though, or was it Deb? Any way she said to use ivermectin first and then 10 days later use Wazine.
Well I just went and found this thread.. and they said to do the opposite.. first the Wazine, then the ivermectin.. https://www.backyardchickens.com/t/172967/does-any-one-use-ivermectin-in-chickens
It still didn't say how much of the pour on to use per gallon of water as they were mostly talking about using it for mites - not worms.