Brake question

I got my HKS pads recently to go with the autozone blanks. They worked pretty good until recently the pads start making noise. I looked at it, the brake pads are kinda loose against the calipers so they kept hiting each other... what should i do? I bought some orange stuff something called brake quieter or some, they don't work.
What should i DO? do i have to change a new set of pads? or there is something wrong with the caliper housing??
:confused: