Summer 2000.

The management at my summer residence, bless their souls, apparently treated the base of my bathtub with a mystery product called Non-Slip. Here's the official text that was on my mirror:

FOR YOUR SAFETY WHILE SHOWERING, THE MANAGEMENT HAS TREATED THE BASE OF THIS BATHTUB WITH YSA NON-SLIP

I'm still trying to figure out what non-slip is. It must be damn effective because I don't recall slipping in my bathtub once. You'd better believe the hype. This stuff really works! [b a c k]