On 26 Apr 2016, Uncle Monster wrote in
alt.home.repair:

On Tuesday, April 26, 2016 at 8:44:07 AM UTC-5, Lisa wrote:
replying to ShadowTek, Lisa wrote:
I need to wash pebble rock, any ideas?

Pick up each pebble one at a time, spray them with Formula 409
then wipe them off. Easy! ^_^

Q-Tips are also helpful for getting dirt out of the cracks, and Lemon
Pledge is good for making each pebble shine, plus they will smell
wonderful!