I was more used to using gelatin for fining and was slightly unsure about adding what literally is a fine particle sand to my drink. However, since gelatin is said to be capable of stripping away tannin, but this won't, I had no option but to give it a try. (I had already added oak months ago)
Followed the direction on the package semi-precisely and poured hot water into a bit of this sand and made ... mud. Poured it into my mead and gave it a stir, left it sit in the cold for a week and Volia! it became transparent. I think I'll continue using bentonite from now on. (Or use gelatin and add oak after that?)
This package contains decent amount for the money spent, very happy with the purchase.