Work permits or employment certificates must be obtained from your local school for all minors 14 and 15 years of age before beginning work. 820 ILCS 205/9-12.
The key in using apple cider vinegar to treat kidney stones is consistency. You should take apple cider vinegar every day with lots of water until the stone is completely dissolved, or the pain from the kidney stone (and accompanying issues while urinating) goes away completely.
Kidney infection is a common problem among kidney failure patients, so some kidney failure patients use apple cider vinegar as a solution for frequent kidney infection. However, in some other cases, kidney failure patients are told they should stay far away from apple cider vinegar.