Cleaning sachet for removing carbon deposit and rust on gun, and cleaning method thereof

A method for removing at least one of carbon deposit and rust on a gun element by a cleaning sachet, wherein the cleaning sachet comprises cleaning powder and a sachet body, the cleaning powder comprises aluminum oxide (Al2O3) making up 75.000% to 99.989% by weight of the cleaning powder, zinc peroxide (ZnO2) making up 0.010% to 9.000% by weight of the cleaning powder, and nano zinc oxide making up 0.001% to 6.000% by weight of the cleaning powder, and the sachet body is made at least of a porous fiber material, formed therein with a receiving space for accommodating the cleaning powder, and configured to allow a lubricating oil to enter the receiving space through the sachet body so that the cleaning powder is dispersed in the lubricating oil and a part of the cleaning powder dispersed in the lubricating oil is released to an outer surface of the sachet body, the method comprising:

• laying the cleaning sachet on a carbon-deposited area or a rusting area of the gun element;
• moistening the cleaning sachet with the lubricating oil;
• waiting a period of time;
• and
• wiping the carbon-deposited or rusting area with the cleaning sachet.