Question about the inpurity of dogs feces

DWQA QuestionsCategory: QuestionsQuestion about the inpurity of dogs feces
Hassan asked 5 months ago

Assalamu aleikum . I have got a question about the inpurity of dogs feces.
Yesterday i was in the city walking when suddenly i walked in dogs feces with my shoes . So i went to a grass field where i rub my shoes so the feces got away. On my way back home it rained and my shoes got wet and i walked with them in our stairs. 
I want to ask if it is enough to rub the shoes or if i have to wash my shoes seven times one of them with sand. And if so how should i clean the stairs?
Jazakumullahu khairan.