So try to do it as clean and safe as you can.......get the kids out of the house for the day.........wear a dust mask yourself.........Bag the plaster in some heavy duty contractor bags.......try to use a basement access for removal........do a complete clean-up when you're finished.........vaccuum everything and then 'change' the bag.....wet mop......change the a/c filters......wash all your grungy clothes separate from others............doug