Mine (ALL my silica wicked devices, not just clearos) get disassembled so the wick and coil can be accurately cleaned, then get a quick rinse under HOT tap water. This helps chase any remaining juice out of the wicks *and* helps melt some of the gunk that may have accumulated. Then I dab the wicks dry with paper towels.
Then a quick swish in unflavored vodka to help displace any remaining water, melt more gunk, and kill any possible bacteria. Dab dry again with paper towels.
Assemble *without* the tank or top, so the coil is exposed. Pulse the fire button to "dry burn" until the coils get a nice, even orange glow. Adjust with needle or toothpick, etc. if spacing is bad. **After a tank is freshly filled with juice is NOT the best of times to discover there may be a short in your coil!** While I do this I also blow hard on the coil to help blow out any gunk (that has now been baked to ash) off of the coil. Again, the toothpick, etc. may assist in this.
Re-assemble and fill with juice. If I'm not going to fill it immediately after dry burning, or if the device is particularly nasty (some flavors are VERY persistent!) I may leave it (all the components exposed to juice) over night in a vodka bath and then dry burn the next day.
Tap water generally has chlorine in it to inhibit bacteria. PG, used in our juices is also a great bactericide.