I had to tape my pups ears 4 different times before they finally stayed up. I used masking tape, left it on for 5 days and then would get it damp about 10 minutes before I would start to remove it- that seemed to take some of the stickiness out of it. I also give my pups about a teaspoon of yogurt everyday for added calcium while they are growing and teething. I don't know if that helps or not- but both of their ears are standing straight up now at 14 weeks.