Anyone know if these rocks look safe? Grabbed them out of the backyard and am currently boiling. A few might have had a speck or two of paint. I'll try to brillo it off.
They can also be soaked up water with dechlorinator if you want to speed up the process or make sure every bit is off (just for peace of mind)
Like with magnum filter cartridges. Soak in bleach water for a day, rinse, soak in water with dechlorinator.
Bleach is much safer than other strong cleaners, since it won't leave nasty and harmful residues or anything.
Just make sure to use PLAIN bleach, not the stuff with scents or anything else added to it.