Hi,
I still offer from tongs - but I keep it at least 4-6 inches away from the snake when I offer it and let them come to it. Going too close can make them go into defense mode instead of feeding mode.
But some will indeed eat a cooled down mouse from the floor if it is left in over night.
Pre-scenting makes the most difference of anything I have seen.
I can normally open any tub in the house and reach in and stroke the snakes with no problems.
But when I have food defrosting I open them wearing motorbike gauntlets from full arms reach and still have to dodge on occasion.
dr del