I HAVE 4 TOILETS 2UP AND 2 DOWN ,AND THEY DRAIN INTO A TANK ANDTHEN PUMPED OUT BY A SUMP PUMP.THE SYSTEM IS ON SEPTIC. IF THE TOILETS HAVE SOMTHING IN THEM OR NOT THEY THEY DONT FLUSH PROPERLY.WHEN THERE IS WASTE IN THEM ,HAVE TO USE A PLUNGER AND SOMETIMES AN AUGER TOGET THEM TOGO DOWN. AND THIS IS ON ALL OF THEM. HELP !!! DONT WANT TO HAVE TO CALL A PLUMBER