My sack has been in service since 2012. Made it out of curtain material from Walmart for $5 and some time with a sewing machine.
I converted my burner to natural gas, no propane bottles to run out mid boil. [emoji41]
355 gallons since mid 2012.
I'll have to dig up my paper brew sheets prior to that, going back to the mid 90's. I didn't brew that much back then due to living in Florida and not having a Fermentation chamber.
This year, 7 brew sessions for 35 gallons.
1 - Black IPA
2 - Red Rye IPA
2 - Pale Ale
1 - House IPA
1 - Robust Porter
I can't believe I have not been able to have a batch ready to keg with a 4 tap setup. I may have to brew next weekend too.
I rinse mine out with the hot water from the chiller. I air dry it a bit and then store it in my beer fridge where it dries further. It never gets mildew that way.
I have been using the same bag about 10 years.