as soon as you come with the water it is gone again and disappeared into the joint, you have to sweep and water anyway.
Laugh! Yes, that is really the case. It is mixed and swept into the wet stones. It also says so on the package. And not without reason. Do it on a warm day in the evening, it dries quickly and the next day the warmth helps to drive away the smell. After 2 days, everything should be fine.
So there are definitely two possible ways to use the contents on my bag. Either mix 20 KG of material in 8L of water and then apply, or apply dry and lightly moisten.
There are also product videos for this. Wet sweeping works better in my opinion. With the light spraying, it's practically such a thing. It probably won't be that precise. If necessary, try 1 m² each time.