Inquiry (采购产品): septic tank Whenver we have alot of rain, our basement smells like sewage. Out hous was built in late 1970's and we have had the tank emptied x2, last one being 6 years ago. Any suggestions for what might be causing the smell? **** Hidden Message ***** JoAnn Praete 45044 Company: none E-mail: runner045@cinci.rr.com **** Hidden Message ***** runner045@cinci.rr.com