2 Questions about the Pink Stuff

I have heard and read that the alcohol based stuff can harden rubber seals. Don't know. But I use the propylene glycol type just in case. Walmart typically sells both types. Read the labels. Propylene glycol type is a dollar or so more per gallon than the ethanol type.

2oldman wrote:
Please tell us where you heard this.

This guy (at the 2 minute mark in video) https://www.youtube.com/watch?v=QnjAxHZzz-U

Please tell us where you heard this.

The alcohol is likely not a concern. They say it to prevent drying out seals. However, I've never noticed a problem with it. One way to avoid most of these "issues" would be to simply drain the pink stuff once you've used it to winterize. Then the only places it should be is in the traps, maybe the toilet bowl and some small amount at the waste valves.

I buy my Pink stuff at ACE hardware on sale for $1.99. It says it it is safe for humans and I guess I believe them.