ANSWER TO PIONEER PUZZLE #18:
In the 1840s beds had ropes stretched across the frame with a straw tick on top of them. At night they would tighten the ropes so the bed wouldn't sag. Then they would beat the straw tick so all the bedbugs would fall to the bottom. Sometimes the beaters were made out of metal and sometimes wood.
Remember the sayings "Good night, sleep tight. Don't let the bedbugs bite." And "I guess it's time to hit the hay."