Indeed, some of the most controversial elements being overturned or prohibited by the Every Student Succeeds Act were implemented not under No Child Left Behind but through the waiver system. It was through the waivers (and the Race to the Top grant program) that the Obama administration mandated test-score-based teacher evaluations.
Vinegar, bleach and borax powder are some examples. Bleach -- If you want to use something stronger than vinegar, then use bleach. Bleach is best used when the rings and stains are already too tough. Pour half a cup of powder into the toilet bowl. Leave it that way for a few hours before you flush the bleach away.
Here is how to use cheap plain white vinegar to get rid of hard water: For the refrigerator in-door dish: Pop the dish out, pour a little vinegar in it and let it sit for about 20 minutes. I use an old toothbrush and the hard water just wipes off without any scrubbing. To clean faucets: Soak some paper towels in vinegar and placed them on the areas with hard water. Fill a spray bottle filled with vinegar and spray the towels every time you walked past. After about 20 minutes take the towels off and scrub off the hard water with an old toothbrush.