Dog ear hair ( not a plucking question)?

I have 2 dogs. One has floppy ears, the other perky. Lately ( past year), my floppy eared dog has been shaking his head alot. When we look down his ear with a flashlight, we notice there are hairs ( not attactched,) usually in clumps, sometimes just one or two. Out of curiousity, we checked the perky eared dogs ears, there is no hair. Ive checked this dog often and there is never hair. The floppy eared dog always has hairs that bother him. How can i prevent this? Why doesnt the dog that has ears wide open have this problem?