The answer to this question depends on the age of the person you care for and whether they have any other problems. Generally speaking, taking a temperature by mouth is the easiest and most common route for adults. A rectal temperature is the most accurate for infants and young children.
No. Mercury is a hazardous material that can be toxic when exposed to the skin. Glass thermometers break easily releasing mercury. Contact your local health department to determine how to dispose of a mercury thermometer. Call poison control immediately if you break a glass thermometer.
Yes, but give them clear liquids like: