I clean my teeth with strips from time to time and I really like the results. The cross strips work and make my teeth whiter. This is the best affordable way to whiten your teeth without visiting a dentist. The packaging is convenient, but I only use the strips by cutting them into two parts. Because when bending the strip, it hits the dental nerve and my teeth start to hurt a lot. so I found this way. Be careful if you have very sensitive teeth and just cut the strip into two parts. Otherwise, the strips are worth the money and give a good effect, if you do not drink coffee, tea and other colored drinks, the effect will last much longer.