청소업체가 비밀로 하는 화장실 변기 요석 곰팡이 청소 방법 "이것만 바르면 1초만에 녹습니다"

Until the day every citizen of Korea becomes a cleaning expert! At Cheongsogosu, we will share various cleaning information. Cleaning Service Inquiry (Jigu Cleaning): https://cafe.naver.com/mtonline Cheongsogosu Instagram:   / cheongsogosu   Timeline 00:00 Checking for limescale in your toilet 00:50 Introduction to limescale cleaning supplies and lime removers 01:17 Why limescale forms and why it doesn't come off with brushing 05:22 Important precautions to observe when using lime removers 06:37 Outdoor units that can lead to fires 07:28 Removing and preventing light limescale with citric acid