Clean you toilet the natural way. Septic and compost safe, The ingredients of sodium bicarbonate, citric acid and essential oil (eucaylyptus, orange and thyme) will help to feed the good bacteria in your effluent tank.
To clean your toilet, drop a bomb into the bowl and let dissolve then scrub around with toilet brush. If you have light scale build up add 2 or 3 bombs and let sit overnight then scrub about with brush in the morning. Best used every couple of days to once per week depending on your household.