The self-draining lines that I used to have burst open and messed up a lot of the surroundings, not worth it. I had to call a plumber and it all went downhill from there too cause I'm pretty sure that the company was a big scam. They didn't have insurance and the guy wanted to look as he hurt his foot because of some hazard that I had there and wanted to get money insurance off of me. I have no idea why they all don't have
good external plumbing insurance, that's something I look for any time I hire a plumber now.