[header] How to whiten your teeth without spending a lot of money [title] Try a tray or gel. [step] Trays and gels designed to whiten teeth can be purchased over the counter at most supermarkets or drug stores. Such methods are fairly effective , 80% of users reporting results. 
[substeps] Read the instructions on the gel and tray you purchase so you know exactly how the product should be used. Some trays should be worn for a few hours a day while others are worn every night.