What teeth whitening product is most safe to use?

I've heard that teeth bleaching makes your teeth sensitive. I want to bleach my teeth but I don't want to use some horrible product.
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This is what I use every day...it sounds crazy, but I promise it works! I swish with peroxide...just about two teaspoons full because after you swish for a while, it really foams up and doubles in your mouth. I swish for about two minutes (I walk around and do other things while I'm doing this). If you decide to try this, just don't eat or drink anything for about 1/2 an hour. I just had a dentist appointment a couple of weeks ago, and my hygienist was like "wow, your teeth are really white!" All I do is regular dental care, and swish with peroxide. It's a heck of a lot cheaper than the strips/bleaching kits too! Plus, my teeth are never sensitive. It takes about two weeks to notice a real difference, but it works!
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