Commode flushing problems

We've been having this problem with our commode for a few years, but it has not been this severe. For the past week or so, it has gotten a lot worse. We live in my grandparents' home which is nearly 50yrs old so we just assumed the age was the problem. (At times), we used to have to flush the...

I have "American Standard Vent Away" wall hung commodes (3). They were converted to standard flushing mechanisms years ago. One of the commodes flushes sometimes and other times not. I'm sure the drain lines to the septic tank are clear. The tank was pumped last year. This particular commode has...

My commode has been leaking really bad and I has a seeping sound coming from it when it is flushed. Also, it will not flush anything well. What could be the problem?

We have an older bathtub that stops up and then the commode fills up with water and runs over onto the floor? What do you think the cause is?

I am getting a strong septic smell after flushing the commode or running water in the sink on the 2nd floor. I added an addition to my house 3 years ago and tied a new bathroom into the septic system. All was well for a while but now we get a strong septic smell every time we flush any commode in...