Hi, I live in a 3 bedroom home , w/ a family of 3.. we have an awful sewage smell invading our kitchen and bathroom. We've had the tank pumped twice in four months and nothing seems to help. Somedays the smell isn't noticeable and other days it's unbelievable. We just boughtthis home seven months ago and already I am regretting it. We've tried the bleach and hot water and several other home and commercial remedies w/ no luck. HELP!