Salaam ‘Alaykum.I came home from outside and unknowingly had poop on my shoe and walked around the house (i.e. passageway, kitchen). After realising, my mother cleaned it by mopping it with cleaning substances and (wet) wipes (i.e. my mother cleaned it how regular impurity is cleaned). But the problem is that we do not know if it was dog poop, cat poop or fox poop (since we have foxes in our area). So should we assume that it was dog poop and clean the whole floor of the passageway and kitchen by washing it seven times (one of which must be with soil) or should we assume that it was regular impurity and leave it at that? If we must assume that it was dog poop, then does that mean our passageway and kitchen floors are considered impure because we mopped the entire passageway and kitchen, therefore spreading the impurity since we did not purify it the way the Sharee‘ah demanded us to? Moreover, the mop was put in the sink and washed therein, so if we do wudoo’ and place our feet in the sink or put kitchen utensils in the sink, are our feet and kitchen utensil considered impure? [Anyways, I lean towards the scholarly opinion dog poop is like any other (regular) impurity and may be purified how regular impurity is purified (and I know that it is good to avoid differences of opinion), but I am afraid that the other opinion may be the haqq (truth) and that in the future I might follow the other opinion (which states that dog poop is heavy impurity and must be purified like its saliva)]. Jazaakum-Allaah Khayran.

All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.

If the impurity of the dog is on the floor, it is enough to pour water over it in order to purify it.

Since, there is a doubt whether or not it is the impurity of a dog, then it cannot be ruled as such just because of doubt.

Moreover, the floor becomes pure when it becomes dry according to the view of many scholars; this is the view chosen by Shaykh Ibn Taymiyyah .

In any case, if you had poured water on the place that you know was stained by impurity, then that place became pure by doing that and you do not have to do anything else.

It is clear that you suffer from whispers. If this is the case, then you should avoid and repel them, and not give in to them as this leads to a great evil.

Allah knows best.