You can also use it to descale a kettle.
You can use it to clean the toilet. Just pour it in the toilet bowl, leave it a while, and then flush clean.
It can eliminate the grease stains from your clothes and fabrics.
You should pour some on the floor, and then hose off, to clean the oil stains in the garage.
Due to the high concentration of acids, it can kill slugs and snails.