stall mat: https://www.tractorsupply.com/tsc/product/utility-rubber-mat-black-4-ft-x-3-ft-x--frac12-in-1011848?store=1298&cid=Google-Shopping-Sustain&utm_medium=Google&utm_source=Shopping&utm_content=Sustain&gad_source=1&gclid=Cj0KCQiA_qG5BhDTARIsAA0UHSK9CwmiPOTprqqynZuZzx8-JUDU3bxMf1XzLk209FlKJe5-Il9x3xoaAhLmEALw_wcB