The best! I know I’m safe and protected with these products! The cleaning crystals are life for me! No way, no how would I use any other otc cleaning crystals or tablets! It only takes a pea size amount to clean you mouth and teeth! You can use the cleaning paste while your teeth are in your mouth! The paste is great for public situations and interpersonal times (wink, wink?). I also spread a thin layer of the paste on my denture teeth and let it sit and whiten for a while. It works great! I’ve tested the adhesive 4 separate times and each time it’s last 24 hrs and is just a strong as when it was 1st applied! Best of all your free from bacteria and fungus and no dry mouth!