from your google lin https://www.sciencedirect.com/science/article/pii/S2211320720300385 https://www.sciencedirect.com/science/article/pii/S221132072... is qu

from your google lin https://www.sciencedirect.com/science/article/pii/S2211320720300385 https://www.sciencedirect.com/science/article/pii/S221132072... is quite funny, where they found that the lambs were licking the topically applied ivermectin, but also that they didnt notice any decrease in parisites for any of the ingestion/injection/topical they also say theres nothing showing any applicability to cattle