Take-home whitening may seem easy enough to be done by all patients. However, this treatment is not for everyone. Take-home whitening is best given to patients who have cavity-free teeth and healthy gums. It is also important that the patient is old enough to be able to follow the specific instructions that are given by the dentist in regards to the amount of bleaching agent to be used and the length of time the tray needs to be worn. With good oral hygiene and compliance to given instructions, take-home whitening can be very effective.