Can I still use old Sound Guard Record cleaners?

While clearing out some cabinets, I came across several bottles of record cleaning solutions. They include Sound Guard Record Cleaner, and Signet Stylus Cleaning Formula. They are probably between 15 and 20 years old. I am wondering if I can still use them. Do they degrade over the years, or are they stable? THANKS in advance to anyone who knows!
Why would you want to with the better products today?
I spent a lot of effort cleaning Sound Guard off some of my LPs many years ago. I found it left a significant sonic signature on my LPs and was sorry to have used it. There are many better cleaning fluids available today.
Use the Sound Guard brush but forget the fluid . Does more damage than good , far too hard to remove.