impurity

Q: If one steps on dog poo, will the shoes become clean by walking and rubbing shoes on dry or wet grass and it disappears?

Q: We wash impure and pure clothes in a bucket together. Does this makes all the other pure clothes impure?

Q: While putting clothes with najaasat on them in the washing machine, some of the clothes touched the outside of the machine. After washing, while taking out wet washed clothes, some part of the clothes touched the same spot of machine where najis clothes touched. My question is, did my wet clean clothes again became najis and should I wash them again?

Q: How many times we should wash impure clothes in an automatic washing machine to make them pure? Washing once in a fully automatic washing machine is enough or not for making clothes paak (pure) or I need to wash three cycles?

Q: My Question is, please give me a detailed explanation about how to clean a (Napak) cloth in the washing machine. Should I remove the cloth from washing machine or I can clean it changing the water three times in it?

Q: If I found some mazi drops on my underwear after Salaah and don't remember exactly when it came out. Is my prayer valid?

Q:

1. If I see a wet dream and I am wearing a pad, does it make the bed sheet najis if there are no signs of impurity on it? Should I change the bedsheet

2. I keep my scarf for prayer on the same bed. Has it become najis?

3. If I put clean wet or dry clothes on the same bedsheet, will they become impure?

Q: My mattress got soiled by urine twice. I tried purifying it by pouring less than a kurr water over the places. Can it be considered paak?

Q: We have wall to wall carpets on each room's floor in our house. If it gets impure, how can one make it paak? It is not possible to pick it up and let water flow through it. I take a dry towel. Pour water over the impurity and rub it dry with the towel. I repeat it three times. Does it make the carpet pure?