Same as above, just a damp towel you don't want to use an abrasive. Using an abrasive over time will change the diameter of the shaft and open pores of the wood to collect chalk and dirt. Do not leave your cue in the car. Warm and cold weather is the most concern. Store your cue in a quality cue case.
Today there are several case makers providing superb protection.
Vertically, in a case. I hope this has helped you understand more about my cues and how to take care of your investment.