CHAPTER 4 Bedbugs, fleas, lice, ticks and mites

presence of live bugs, cast-off nymphal skins, eggs and excreta. The excreta may also be visible as small dark brown or black marks on bed sheets, walls and wallpaper (4). Houses with large numbers of bedbugs may have a characteristic unpleasant smell. Live bugs can be detected by spraying an aerosol of pyrethrum ................
................