Cindy Crawford to Malibu Schools -- Take Out Your Caulk!

Cindy Crawford is furious -- claiming contaminants at various schools in Malibu could be harmful to teachers and students ... and she's pointing the finger directly at the caulk.

It's actually a pretty serious topic -- with Crawford and her husband Randy Gerber already pulling their kids out of Malibu High School amid fears that the window caulking at MHS and other Malibu schools could be linked to cancer.

So Cindy went to the Malibu Library this morning ... where she whipped out her own solution to the caulk controversy for FOX 11 in L.A.