Cable maintenance

I clean all my connectors at least twice a year.
I use de-natured alcohol and the Craig products.
It takes a couple of hours to do, but does make an audible difference.
I use cotton q-tips that you can get at an electronic store, you want the ones that do not use any adhesive to bond the cotton to the stick.I also use pipe cleaners.
Joe nies

A couple of hours, Geez Louise how many cables do you have?

I'd have to smoke some good quality Mary-Joanna to clean cables for 2 hours.
Otherwise it's too boring.
Most of my time spent to clean bare wires that speakers are connected with. I have to do that once every couple of months. I use mix of acetone and alcohole.
Interconnects I clean once in blue moon or upon visualizing the need.

Bathe gently in non-deodorant soap.

Rinse thoroughly with warm distilled water.

Towel dry and sprinkle lightly with talcum powder.

Wrap in a lint free cotton blanket.

Leave a night light on if necessary.

Kiss kiss

Maybe take the wires to a nice spa and have all that done for you?

A chocolate bath with a thorough rinse might really revitalize those tired old wires.