Ivermectin Dosage Help

[March]

Merry Christmas! So I bought this medicine https://www.amazon.com/Ivermectin-P...TF8&qid=1451075897&sr=1-3&keywords=ivermectin and my guinea pigs weigh 800 kg and the other weighed like 1 line ahead of 800 kg, but I didn't understand it. Could someone help me on the amount I'm supposed to give them and should I buy a smaller syringe?

 

[bpatters]

If you want it, here's the dosing chart by weight of the guinea pig: www.guinealynx.info/topical_ivermectin_pour-on.html