We want to adopt a 9-month-old dog. The only thing in his medical history is a mild case of demodex that was treated with Bravecto. He has since been cleared off all mites. Is this a red flag for adoption? I read online that it can be an indicator of an underlying immune system problem. We have fallen in love with him, but if there are sure to be ongoing health problems, I’m not sure that we’d go ahead with adoption.