Recently I had the septic tank drained and cleaned, we had a very reputable company come out. they drained it and put liquid back in so the bacteria would still be there and said we were good to go. after about a week we got a very strong septic smell in the kitchen, I didn't think much of it there are houses around and with the farms it is not uncommon to smell that. today the same thing, very strong septic smell in the kitchen. never had this problem before and not sure what to make of it, our entire system has traps in it other than the washing machine and that goes into the main line which has a trap before the septic tank. the system is also vented in two places.
Anyone ever had this problem ? I am wondering if maybe the tank is building up pressure and "burping" into the house piping while it is filling back up ? thoughts ?