Yukkkkk, truly gross (this from a bloke who walked along a railway track a few weeks ago and didn't think twice about picking up the pt/vic's liver). I have to be KO'd to have anything done to my teeth. Works well though as I have to have 48hrs off afterwards and the felling is soooooo trippy! Also have to have it done at a health centre by a consultant, which is free. :o) Being squeamish saves me a fortune.