Updated from a previous thread...
Step 1: Look at driftwood.
Step 2: Identify if driftwood is driftwood or not.
Step 3: If driftwood is wood go to step 4a, if driftwood is rock go to step 4b
Step 4a: Identify if driftwood is clean or not, If dirty go to step to step 5, if clean go to step 6
Step 4b: Identify if rock is clean or not, If dirty go to step to step 5, if clean go to step 6
Step 5: Wash it.
Step 6: Put in tank.