Для выявления нарушителей инспекторы использовали метод скрытого контроля.Источник:
https://xn--80aaaf9agbtgd4a3f4b.xn--p1ai/%d0%bf%d0%b5%d1%88%d0%b5%d1%85%d0%be%d0%b4%d1%8b-67-%d1%80%d0%b0%d0%b7-%d0%bd%d0%b0%d1%80%d1%83%d1%88%d0%b8%d0%bb%d0%b8-%d0%bf%d0%b4%d0%b4-%d0%b7%d0%b0-4-%d0%b4%d0%bd%d1%8f/
https://xn--80aaaf9agbtgd4a3f4b.xn--p1ai/%d0%bf%d0%b5%d1%88%d0%b5%d1%85%d0%be%d0%b4%d1%8b-67-%d1%80%d0%b0%d0%b7-%d0%bd%d0%b0%d1%80%d1%83%d1%88%d0%b8%d0%bb%d0%b8-%d0%bf%d0%b4%d0%b4-%d0%b7%d0%b0-4-%d0%b4%d0%bd%d1%8f/