When we bought this house about 17 years ago, there were clear silicone beads of caulk on each side of the track base and we had a new shower door (with new track) who also put down a nice bead of silicone on each side. Now, after years of use, the caulk on the bathtub side of the track base has a lot of mildew in it. How do I cut away the old silicone without cutting the fiberglass tub portion under the silicon? Is there a special tool for this?
Thanks in advance,