I've got this obsession with making sure their ears are well cared for. My kids, plus Lily, cuz she counts as one :) For some reason it grosses me out to look in anyone else's ears. I'm so glad. I bought an otoscope. Every parent should have one, seriously. So handy.
When they've got TOO much wax (a little is normal and healthy) I just put a few drops of hydrogen peroxide in and have it sit for a minute. Sounds crazy, but it works. Softens the junk and eventually it comes out easy.
The kids freak out at first, but now they don't mind. They even kinda like it.