We took Zoe to the vet yesterday; she was vaccinated for Feline Lukemia, dewormed, and treated for her ear mites with Ivomec (sp?). She is sue back at the vet in 3 weeks for her rabies shot and a booster for the Feline Lukemia. I think the Ivomec worked, and the vet may administer another dose at her next appointment, but the black gunk is still in there... Should I (very carefully) swab out the gunk with a cotton ball? Should I apply anything to the swab? Any advice appreciated!