I had planned on santizing the complete setup, and just discard the sand alltogether, regardless.

My tanks are gonna be displayed in my living room, so i dont plan on using papertowels or newspaper, my snake is on reptile carpet and gets changed whenever he poos not spot cleaing at all, just remove the carpet and replace with a fresh set, I take the others immediately and soak them in hot water with a little dawn dishwashing detergent with bleach alternative and then rinse well.

But if you use the 3 inch worth of bedding which ever kind is best, does it have to be complete removed and redone weekly? or can i just do spot removal and redo completely once a month etc....

I cannot find that answer anywhere.