We already know how to use feces in making bricks; see the link. I participated in a construction project in Ecuador where cow dung was used in making mortar,

We already know how to use feces in making bricks; see the link. I participated in a construction project in Ecuador where cow dung was used in making mortar, so I know it can be done. Sure, feces can be used as fertilizer; both should be explored for use on the Moon and Mars. https://www.sciencealert.com/using-biosolids-for-bricks-could-help-make-construction-way-more-sustainable https://www.sciencealert.com/using-biosolids-for-bricks-coul...