Ask the neighbor if they want some free fake Oxiclean. If they say no, punt it into the trash instead. When I got a 20# tank using CO2 seemed a little more inviting. When the local supplier started filling tanks things got even better. When they started ignoring the hydro seal date on the tanks then things started looking really good. I also stopped all CO2 leaks (AFAIK) by using keg lube. The CO2 world has been really good here lately.
The wife will use it in the laundry. I never had a problem with oxy free. Scared to use anything but pbw now.
I'm pretty good on CO2 with 4 20lb tanks but still hate pushing with it. I just cant make myself. B/c of my frugalness with CO2 I still am using the first 20lb tank I had filled in 2012. It's served 6 kegs w/o a refill for 5+ years.
Now that I have JG fittings I wont wash another line. I'm redoing everything and will change out at keg change from now on.