peta I am reading from the bottle: It contains sodium hydroxide 2.4 g/l sodium hypochlorite 50.7 g/l and alkaline salt 1.2 g/l. The back says strongly alkaline. It does not specifically say it is suited or supports septic systems...

at the nozzle end there is a rotatable end. Rotate it and it opens. When complete rotate the nozzle back as it was. The rotation is a bit tough as it slides out and then notches into place.

How many rotation it requires? Should I rotate until it opens? or only once clockwise?