Is it OK to put bleach down the drain? You may permanently damage your septic system. Bleach and cleaning fluids create toxic gasses when mixed together. If you pour bleach and other cleaning agents down your sink drains, and they mix in your pipes, you can contaminate the air in your home with the resulting gas created.
Does bleach damage PVC pipes? Skip the bleach, not because it will harm your PVC, but because you are wasting your time. On a side note, there are some chemicals that absolutely must be avoided when cleaning toilet bowls or you risk damaging your pipes. Those include acetone or nail polish remover, or even PVC pipe cleaner.
How often should you pour bleach down your drain? Once a month, pour 12 ounces of chlorine bleach straight down the drain at the end of the day. Be careful not to let the bleach sit in the bowl of the sink, especially if the sink is stainless steel. In the morning, flush the pipe thoroughly with water from the faucet.
Can you pour bleach down a smelly drain? To use bleach to clean your drain, fill the sink with hot water, and add a cup of bleach. Then let the sink and the bleach drain. Repeat until the odor is gone. Use Boiling Water: Another easy DIY step to reduce drain smells is to pour boiling water down the smelly drain.