Off is a green product biodegradable and water-based
I used this last summer to remove a lot of silicone and it saved a lot of time and the surface was paintable afterwards. Lowes stocks this in the paint
department builders use it to remove silicone on tubs and granite counter tops. Just spray it on let it sit. This does not dissolve the silicone but rather breaks the molecular bond. U.S. Patent 6,929,702
Please note I'm just a sailer and have no connection with this company.