After a summer of road trips I'm giving my wife's Pacifica a good going over, inside and out. I wiped out the area under the floor in the slider openings, but I'd like to be more thorough. Has anyone taken a hose to these areas? I'm concerned about drainage. I'm also VERY CAREFULLY going to rinse select areas in the engine compartment after a conservative spraying with some Simple Green to get rid of at least some of the road grime.