Please help! We have tried everything to solve our septic smell problem. We built our home last fall on an acreage and during this Summer we have noticed that the enclosed toilet in our master bedroom has a strong septic gas oder from the base of the toilet. We have also noticed that the same odour is coming off the roof of our 2 storey home. It is so bad that we can not sit on our back deck wihtout smelling the odour. Our builder has changed the toilet, extended the breather tube on the roof and plugged the vent fan, but the odour is still there. It is making both my husband and I very sick with headaches. Any information would be great. Thanking you in advance, Janette