I lied, well forgot til I looked, we did a yellow straight wormer last and after speaking to warmer lady we bought fasimec duo s . She suggested this after we looked though the elanco guide, a handy leaflet, about seasons and they're suitable products. It fits the bill as the scops guide suggest s triclabendazole for this time of year and then we also having a good dosing for nematodes too via the ivermectin for the youngsters . It's a single dose, withdrawal of 27 days.