waxoil, grease,
think waxoil is the tidyer solution and better to work with proaly longer lasting.
there both easyer to clean off but i should imagin waxoil been somewhat less messy. id use something diffrent BTP it's actualy attery terminal protector it comes out the can like bubbely green snot and just hangs on what ever you spray it on. just easyer to remove than underseal