I enjoy it - my teeth are whiter, my breath is fresher, my mouth feels cleaner, my toothache is gone.
I think it is cool to wake up in the morning without that yukky sewer like feeling in my mouth which is why I try to remember to do it for the second time by 4 o'clock and before I have put anything in my stomach for the night. If I miss it I am back to having that morning mouth crud. this stuff is safe and amazingly effective. Need I say more?