Question: How to remove difficult decals.
Option 0: Spray the decals and the surrounding areas with WD-40, lifting the edges to get underneath, if possible. Let sit, then gently scrape away the decal with the edge of a cookie sheet. Degrease the tub with liquid dishwashing soap.
Option 1: Spray the decals and the surrounding areas with WD-40, lifting the edges to get underneath, if possible. Let sit, then gently scrape away the decal with the edge of a credit card. Degrease the tub with liquid dishwashing soap.
Answer: 1