I’ll double check with Joe but as far as I know it’s called BACTÉRIOLIT by sobac, comes in 25kg bags and is mixed into the slurry tank then spread on the land.
Ye it is BACTÉRIOLIT by sobac which is a composting additive for manure, slurry, digestates, green waste as said on their website. I know they also do BACTÉRIOSOL which is for soil fertility.