Easy to use!
I bought this product because my washing machine was starting develop a funky smell. You just plunk a tablet into the machine and let it wash (not with clothes). It did smell much better when done and in my machine (a front loader) there was no residue left in the machine afterwards (the instruction says to check and clean it out before loading clothes. It's probably obvious but if your machine is like mine with an automatic soap dispenser, you put the tablet directly into the machine, not in the detergent dispenser.
Rating: 5 stars