Removing Sharpie marks on Rocks Experiment

[fernwood]

Know I saw a thread about the best way to remove marker from rocks.  Just cannot find it now.  

This AM, I did the below experiment.  A photo chart of each step is at the end.  


This was marked over a year ago.



1. Before

2. With Awesome Cleaner left sitting on it for 5 minutes. Then used a green scrubbie for 3 minutes. Left side only.

3. Kaboom. Left on for 5 minutes. Then used scrubbie for 3 minutes. Both sides.

4. Acetone fingernail polish with paper towel for 2 minutes. Both sides.

5. After lightly using a soft pumice stone, 3 swipes/edge. Both sides.



So, I would guess that a 15 minute soak in Kaboom Shower, Tub and Tile Cleaner, then using a scrubbie, would work on harder rocks. Kaboom was the only thing I could find to remove the soot on my Granite fireplace that the former owners were nice enough to leave for me.


Below are ingredients in each cleaner.  Did not list for the fingernail polish remover.


Awesome Cleaner

Label Ingredients:

Orange Oil Blend

Ethoxylated Alcohol

Disodium Salt

Tetra Sodium EDTA

Hydroxy Sodium



Kaboom

Label Ingredients:

Water

Glycolic Acid

Citric Acid

Sodium Octylsulfonate

Sodium Polyacrylate

Fragrance

Denatonium Benzoate



Technical Names:

Water

Hydroxyacetic Acid

Citric Acid (INCI)

Sodium 1-octanesulfonate

Sodium Polyacrylate (INCI)

Fragrance

Bitrex (Trade Name)



Function:

Solvent

Cleaning Agent pH Adjuster

Preservative

Surfactant-Cleaning Agent

Sequestrant

Fragrancing Compound

Bittering Agent

[Deleted]

Rubbing alcohol removes sharpie in a heartbeat.

That is unless the ink is integrated into the stone.

[fernwood]

I think these sat too long. Some might be a little soft as well. 30 minutes in the Kaboom and a pumice stone and most were OK.

[Fossilman]

I tumble most,all my cabs,so the sharpie lines disappear....

[rockcat11]

Rubbing alcohol or hand sanitizer

[1dave]

Rubbing with rubbing alcohol does it for me.