Rags, Rubbing Alchol and a Bone
Soften the pine tar with heat. Soak a rag in hot water and wipe down the handle of the bat, removing a bit of tar in the process. Wet a rag with rubbing alcohol and rub the handle of the bat. Do not rub back and forth; only stroke in one direction toward the handle. Once the tar is removed, wipe the bat down with a dry rag to remove any wetness; liquid will degrade a wooden bat. Apply pressure to a wooden bat with the long edge of a meat bone or another bat and stroke toward the barrel, restoring compact hardness.