A knife is a universal tool. From slicing an apple to cleaning your car battery contacts ( LEAD is poisionous) , it is always there.

That can create a problem or trigger a thought. Many times I used a knife in a situation and immediately thought: Will I use this same knife to cut some food to eat. We use knives for dirty owrk sometimes, and even sometimes we may use them around some hazardous materials.

Do you think about that sometimes ? How do you wash your knife ? Do you have a knife for food-stuff and another for non-food ?