Removing WD40 from disk brakes - possible? So I was stupid enough to get a fair bit of WD40 on my disk brakes. I tried cleaning them by removing the wheel, cleaning the disk (with soap) and to spray soap in between the brake pads and wiping it with a small cloth. 

However, the brakes still squeak like crazy. Does anyone have suggestions on how to fix this?

I went to a bike shop and they told me I would also need to replace the rotor disks, is this true?
You should get rid of the pads and buy new ones. You can clean the disc with cleaning alcohol or brake cleaner. Just be sure to also clean all holes from the inside as there might be some oil left.

Afterwards bed in the new brake pads and you are good to go.