harold1946 wrote:
A plastic putty knife is probably the safest. Heating with a hair dryer or heat gun makes it easier.
I then use mineral spirits or denatured alcohol to remove any residue.
Harold has it pretty much spot on with equipment involved. I do use real razor blades, real carefully too.
On the solvent side -mineral spirits/paint thinner does remove the old stuff decently but will leave a residue. Use the denatured alcohol last to ensure the surface is clean for the new caulk.
Other hotter solvents can be used but there is risk to removing paint from metal trim.
