Q：Does it need use brush or with detergent? How much is it? I can't find to buy this set for remove toilet scale on the web. Does this really make the toilet clean? Because I used many ways to remove toilet scale, but can't be cleared.

A：Hello~ The set for remove toilet scale is include tools, and it need use detergent. The one set is NT $500 and the shipping fee is NT $100, the total amount is NT $600, and each set which has attached instructions, please refer to use! This product has not yet officially sold, so you can't find it on the web. This set which has A and B agent. After you used A agent, if it is not blistering and there are left over dirt, please use B agent, basically the effect is no problem! Click the URL to watch the video: https://www.youtube.com/watch?v=7VGMwLJQs_Q