I say, with Allah's guidance: It is disliked to the point of prohibition to clean with dung and other impurities such as droppings and manure. It is narrated from Ibn Mas'ud  in a marfu' hadith: "Do not clean with dung or bones, for they are the food of your brothers among the jinn," in Sahih Ibn Hibban 1: 44. And because when the Prophet  asked Abdullah Ibn Mas'ud about stones for cleaning, he brought him two stones and a piece of dung, so he took the two stones and threw away the dung, explaining that it was impure, saying: It is filth. See: Bada'i al-Sana'i 1/18, Radd al-Muhtar 1/339, and Allah knows best.