@Kymberly I read that if you squish them off, you can spread the mites that grow under the shield even more, so you have to suffocate them with oil first. I think you can use any you have at hand, but I recommend one that doesn't get rancid, like olive oil or cooking oil - I use leftover camellia oil atm, but I have also used plain cooking oil before. ^^ After dabbing them with oil, you can also wipe them off pretty easily after a few seconds I found.