How do I clean my guinea pig’s ears?

You shouldn't need to. Guinea pigs do have some waxy stuff in their ears, so you probably wouldn't need to clean their ears out unless you notice that it's smelly or they're really going at them, in which case you should bring them to the veterinarian anyway, and then we'll do it for you. There could be a lot going on. There could be an infection or something like that. So make sure to have them seen by a veterinarian and not take it over yourself because there could be a couple of different things going on. We'll need a special scope to see down into the ear canals.