Absolutely magic, if you’re a mechanic you need it, if you have jewelry you need it
what liquid are you using?
Bunch of stuff, vinegar for rust or tarnish, deionized water for electrical equipment, lye for fabrics full of gunk. When in doubt however, WD-40 is sold in jugs and is another kind of magic that combos well with this one.
DONT USE ACETONE, ISOPROPYL, OR DRYING OILS; THEY’LL BURN YOUR HOUSE DOWN AND CHOKE YOU DOING IT