Pros : You can not use your cutter without it. I have been using it for years. One bottle will last a lifetime (almost). It does go a long way.
Cons : Unfortunately, I have looked everywhere for it in local stores but have never found it. I live in a lg, highly populated area, so, if it's not here, it's not here.
Other Thoughts : Very inexpensive. If you look at it, it is worth every drop.