Is NeverScrub Automatic Toilet Bowl Cleaner bad for any part of my plumbing system?
...other than the toilet tank? However, since this particular product (http://www.amazon.com/gp/product/B0002YP306) is installed in the pipe that goes into the toilet bowl, as opposed to just sitting in the toilet tank, it is supposed to keep your rubber and plastic parts from degrading.
That said, will the plastic pipe degrade? Is there any danger to any other part of my system, pipes, the main stack, etc. I don't know all the terminology. Basically I am concerned about everything from the toilet to where my lines enter the sewer system (we use public services, not a septic tank).
If it helps, the house was built in the 1890's; I don't know when the plumbing was installed. But let's just assume that it's a mixture of PVC, galvanized, copper, cast iron and lead.
City water companies always put chlorine (or chloramines) into your water supply, so everything in your toilet and drain system is already designed to handle chlorine.
Admittedly toilet cleaner products add a higher concentration of chlorine, but I'd imagine that before the concentration got high enough to do damage, the smell would drive you right out of the bathroom.
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