I know this is a couple months after the last post, but I am wondering about the shelf life of said paint strainer bags. Are you using as single use and dispose This would make "buying every time I go to Lowe's" understandable. Are they beat up too much after 1 use, or just too difficult to clean? I just want to know, have not used or even tried to use, but I like the idea a lot as the biggest PITA I have found on my brew days is getting cooled wort through my funnel without it backing up constantly. I seem to have a lot of break material and hop particles at end of boil that clog like crazy, even using muslin bags for hop additions. I currently do not have a kettle with a hose, so I am hand pouring 2-4 gallons through my funnel with no regular help: big PITA. Any input would be greatly appreciated.