Objective: To clean the body of a tuba

Which of the following solutions is more sound in terms of naive physics reasoning?

Available choices:
[I] Remove and disassemble the tuba's slides and valves. Place the tuba on top of a towel in a bath of warm water and a little soap. Rub gently with a wash cloth. Pour out water..
[II] Remove and disassemble the tuba's slides and valves. Place the tuba on top of a towel in a bath of warm water and a little soap. Rub gently with a scouring pad. Pour out water..
[I]