We have a 2003 Honda Oddessy. We had the brakes replaced by a friend of my dad's, but a week after replacing them, they squeaked terribly. They make much less noise now, but they are still pretty squeaky.
Do we have any options?
If they squeal when you are using the brakes, unfortunately your only option is to take the brake pads back off and apply disk brake quiet to the back of the pads. It's not difficult to do at all, and it's not very expensive ($2 - $3).
You can pick it up at any parts store, or even on Amazon
It basically insulates the back of the pad (metal) from the caliper (metal) and prevents the transmission of vibration between the two, otherwise the caliper works like a tuning fork and amplifies the sound. And irritating the crap of of you
Might want to check and make sure that the proper anti-squeal shims were installed too. It's not uncommon for people to throw them out thinking they were part of the old brakes (and they don't come with the brake pads, you have to buy them separately). If the old ones were reused, they simply could be beyond their service life.