Had until now always without peroxide catalyst disc in which a neutralizing tablet to give you have. But since I already forgot a few times on the tablet and then it naturally burns like hell during lens insertion, I decided only solutions with Kat.scheibe buying.
The enclosed saline I use actually only when I have after the onset realize that even dirt on the lens.
The price is very good and only slightly more expensive than the solutions with neutralizing tablets.
So to me an absolute buy recommendation!