impurity

Q:

1. Today I found a lizard in the utensils cupboard and in trying to kill it, it hid inside the cupboard and traveled from one to another. I did not know where it went, so I took out all utensils. Still I did not find it. I washed all utensils of all the cupboards by pouring water once. It took around 3 to 4 hours in doing all the effort. I am not worried that if I place the utensils again and i find it again, do I have to wash all the utensils again? It was really so hectic. Is lizard najis?

2. A cockraoch ran over my leg in the washroom. I poured water over there three times. Had I become paak? I read in an islamic website that a cockraoch in the washroom is napaak. Is it true?

3. Last year a mouse used to come from Indian toilet and roam around the washroom. We somehow managed to get rid of them. But once a shirt piece of my suit fell down over the washroom floor place where it used to come every night. I washed it many times but I don't feel like wearing it as I feel that the mouse used to come from such a dirty place with traces of dirty water from the flush and my cloth fell down on the floor. Am I doing right by not wearing it?

Q: I want to ask that if one's hands are very dirty e.g. if urine drops can be seen on one's hands then how many times should the hands be washed. Beyond that limit of washing, will it be a sin. I'm asking this because I'm getting mad day by day as I wash my hands for 20 to 25 times with soap, so it very irritatating to wash so many times as I'm not getting satisfied that my hands are now clean.

Q: My two questions are below:

1. When I shop at a butcher or other store I often find that even though the store is muslim owned they often have non-muslims helping to pack the bought stuff. On a few occasions I found that when they packing my stuff which is often frozen and therefore wet/moist they first lick their fingers to open the packet, therefore their hands have their saliva and then they touch my bought items which are wet. Does this then make my bought items napaak as I am not sure if their saliva is paak?

2. My aunt lives in a complex, near the entrance gate the floor is always wet as the cleaners sometimes clean the front area and also the residents throw the water they use to clean their homes out in the front. My aunt also mentioned to me that the sewage pipe is near the gate and it sometimes leaks. Therefore I never know the source of the wetness on the floor. When I visit and walk on this wet area (it is hard to avoid as the whole entrance is wet), I am not sure whether my shoes and everywhere I walk thereafter with my shoes are becoming napaak. Please can you advise what I should do in this situation?