Coir mats are produced from natural coconut fibre. The husks are processed to form a dense mat surface. The fibres create a stiff brushing action. The fibre texture scrapes mud and debris from shoes. They are often used in doorways and porches. They are used inside buildings and under canopies. https://daltonajftw.dsiblogger.com/72738572/understanding-coir-door-mats