Percy Jackson A cleaning product is a common culprit of drift, especially floor waxes. Alcohol, which you might use to wipe a surface down, can also cause drift. Even the best temperature and relative humidity sensor might experience drift, especially in newer... moreA cleaning product is a common culprit of drift, especially floor waxes. Alcohol, which you might use to wipe a surface down, can also cause drift. Even the best temperature and relative humidity sensor might experience drift, especially in newer buildings.