“The Surfer is useful since you can carry it with you or stash it somewhere safe. The way the silicone feels left a semi-soft invisible residue on my hands, so I sterilized it boiling it in water for 5-10 minutes and the residue was gone. I'm new to this brand and product, so, maybe that's a normal tactile response to the silicone--who knows? It also fell on the floor a couple times, since it's small and can be flung around or easily misplaced. I'm a bit of a germaphobe, so I've set it aside for external use only. If they created a holder for it, or a germ free plastic container, it would help keep it from getting dirty. Aside from these notes, the Surfer is nice to have for convenience.”