No matter how clean you wipe or wash, the moment you fart, all those fecal particles travelling in the aerosol dirties everything again.
Also a hose is disgusting, you'll be spreading all the fecal matter more widely and think about how shitty the hose (and the toilet) is going to be in the first place.
They do sell special alcohol wipes if you really need it to be extremely clean, but remember you'll also be rubbing away the natural oils that protect your anus from drying out and becoming inflamed, sore, broken and itchy.
PS: for those who don't wipe, keep in mind that people around you can actually smell your shit just by standing and know you don't clean up after a dump just by standing nearby, but they are perhaps too polite to break it to you that you smell shitty...