I know there are a million different toothpastes, kits and even toothbrushes now that claim they whiten your teeth, I'm just wondering if anyone has used any with really good results? Some of the kits seem quite expensive but if they work then there worth it type thing. I used to use a brush on gel stuff when I was in the States but they don't sell it here due to the bleaching content that did work but things like pearl drops don't seem to do a thing. Any ideas?