Bell LaboratoriesTrapper Max Free Mouse Glue Traps-mice Glue Traps for Catching Mice-(box of 72)

Please confirm these are unscented as the last bullet states?

Are these traps baited or are they unscented? I don't want to catch mice so I would like them unbaited (no peanut butter scent).

What is the size of each of the 72 traps? And what is the size of the sticky area on each one of them?

I would like to buy the larger 72 trap size. Will they stay sticky or do they have an expiration date?