Is the septic on the side of the house where the odor occurs? Is there a bathroom there?
Is it a 1-story house? In what room(s) do you get the odor?
Any differences with respect to time of day, hot/cold weather, wet/dry weather?
When the septic cleanout was checked for odor, was it at a time when the odor was strong in the house?
Has the septic system been pumped in the last several months?
Can you attempt to describe the odor? Like dead animal or rotten cabbage or ...
[This message has been edited by rpxlpx (edited February 11, 2003).]