If you’re thinking of cleaning up some lava rock that’s spilled on your driveway or in your garden, there are a few things to keep in mind. First, make sure the rock is really clean. If it’s just a little bit dirty, you can try scrubbing it with a brush or a bucket of water and soap. But if the rock is really dirty, you’ll need to use a cleaner. There are several types of cleaners that can be used on lava rocks. You can use a commercial cleaner like Mr. Clean or an all-natural cleaner like vinegar and water. Just be sure to dilute the solution before using it on the rock, since too much liquid could cause damage. Another option is to use baking soda and water. Just wet the rock with water and sprinkle some baking soda over it before scrubbing it with a brush or your hands. Be careful not to scratch the surface of the rock! ..