Answer: doodlebugs

AnswerCrossword Clue
DOODLEBUGSDivining rods
DOODLEBUGSRobot bombs.
DOODLEBUGSAnt lion larvae.
DOODLEBUGSMineral-finding devices
DOODLEBUGSDefects in scribbled pictures?
doodlebugsAn unscientific device for locating oil or minerals; a divining rod
doodlebugsThe larva of an ant lion
doodlebugsDOODLEBUG, the larva of an antlion or other insect; (coll.) a flying bomb of the 1939-45 war