Ivermectin is prescribed as a dewormer for sheep, horses and cows. Sheep seems most appropriate for conservatives. https://www.amazon.com/Ivermectin-Sheep-Drench-Packaging-Vary/dp/B002BADTYG
The always ask for horse paste but why don’t the get sheep drench?
Durvet Ivermectin Sheep Drench https://www.amazon.com/dp/B002BADTYG/ref=cm_sw_r_cp_api_glt_fabc_A1F63ACCY618H8T70NHB