We have just built a new home . We've lived here for 3 months but for some reason in the master bathroom the toilet has a very strong septic odor. I clean once or twice a week, why do we have a srong odor in that one toilet? The other bathroom gets cleaned on the same scedule; we have two kids and two adults, I do laundry every day and run the dishwasher every other we all have a shower or a bath every day. Do you have any answers. Thank you