Impurities on clothing and furniture

Q: In my office washroom, the janitors keep the floor dry using a mop. Now the toilets are separate from the area where there are wash basins. However, the janitors use the same mop to clean the floor of the entire washroom (toilet and the washbasin area). Now when washing myself or performing wudoo at the wash basins, drops of water usually fall down on the floor. Does these drops become napaak after splashing from the floor? In the start I tried to avoid these drops from falling and then bouncing on my feet and clothes, but it is almost impossible and every now and then I get water splashed on my feet and clothes. What I should do in such a case? If I become napaak, how can I perform salah then because I have no way to change my clothes in the office and it happens too frequently?

Q: If wet semen or sperm is present on clothes and it dries after a while, would the garment be clean after scraping it off?

Q: Does a leather sandal become pure by just being rinsed under a tap? (It was messed with urine and impure water). 

Q: My question is about urine drops. I have an issue of urine drops coming out of my body during prayer.

1. Kindly suggest a wazifa for cure.

2. When urine drops come out of my body, I dont know the exact place where drops are as the drops are sort of dried up. What shall I do in such a situation? Shall I wash the whole area or shall I ignore it?

Q: In an automatic washing machine we just have to put the clothes and the detergent and it automatically fills water and washes the clothes as well as it automatically drains the water after washing. Will the impure clothes become paak or pure? Some scholars say that washing impure clothes in an automatic washing machine does not make it paak.

Q:

If I have preseminal fluid on my skin or underwear.

1. Do I have to change my underwear?

2. Do I have to take a shower?

3. Are my pants/shorts impure?

4. If my shirt touches that part, is it impure?

Q: Sometimes when I go to the bathroom I see a white spot/stain. The thing is that the stain is there when I am awake. I mean that if I don't sleep for a whole day and then see it is there. Even If I don't get aroused there is a spot. It doesn't feel wet and neither does my private part fell sticky or slimy like its covered nether does my skin. This case is when I haven't slept for whole day after changing underwear in morning. I don't even feel anything if it there or while coming out if something does come out

1. Am I impure?

2. Do I have to change my underwear and do I have to do ghusul? 

Q: We have a washerman, who after cleaning the clothes with detergent uses hodees (small water ponds to store water) to wash them completely. He uses 3 or 4 such hodees such that after putting clothes in one, he puts them in the other to remove the remains of the detergent... Will it suffice to make the najis clothes paak if one finds no signs of najasat afterwards...

Q: I'm a male and I have a medical problem of urethral discharge incontinence. I can't afford to buy diapers everytime and also there is not too much of leakage, only small amounts. I keep a tissue paper in my underwear to prevent it from soiling. But it always keeps moving from it's place. I tried wrapping around my penis but still it unwraps and moves away. So, everytime when I'm going to toilet, I change my underwear also. Nowadays, I am changing 6-7 underwear per day, which is very very difficult. Please tell me any other suggestion, so that I don't have to change my underwear everytime when I go to the toilet.

Q: If I am ma'zoor, can I use a shalwar even if it is soiled with vaginal discharge in salaah. Do I have to change it when I am doing tilawah and sajdah for sajdah tilaawat?