Small brushes allow for precision. A firm toothbrush will also work.
Don’t push so hard that the grip tape starts tearing. Avoid stripping the grit. Keep going until there are no more dirty spots. If there are deep stains that won’t come out, you might want to replace the grip altogether.
A rubber cement eraser from an art store is a cheap alternative.
Small brushes allow for precision. A firm toothbrush will also work.
Add lemon for a clean smell. Don’t submerge your longboard. Window cleaner can also be used to clean grip tape on longboards.
Rinse your brush in the bowl whenever it gets dirty. Don’t let water pool on your board. Liquids can seep into the wood and do damage to the structure. Pushing too hard will tear the grip and strip grit from the tape.
Make sure the bottom wood is also dry. Don’t use paper towels, as that will break apart and make a huge mess. Grip tape might start to peel if it’s not dried thoroughly.
You can also use a cheap rubber cement eraser from an art store.