Find ALL the bugs on the list. When you have successfully eliminated the letters that comprise the name of each insect, the remaining letters will spell out, from left to right, top to bottom, those magical numbers that you seek! Cache has room for log only, so please remember to BYOP.
ANT APHID BEDBUG BEETLE BOOKLOUSE BOXELDER BUMBLEBEE BUTTERFLY CATERPILLAR CENTIPEDE CHIGGER CICADA COCKROACH CRICKET DAMSELFLY DRAGONFLY DOBSONFLY EARWIG FIREFLY FLEA GNAT GRASSHOPPER GRUB HONEYBEE HORNTAIL HOUSEFLY KATYDID LACEBUG LADYBUG LEAFCUTTER LEAFMINER LICE LOCUST MAGGOT MANTIS MAYFLY MIDGE MILLIPEDE MOSQUITO MOTH PSYLLID SCORPION SILVERFISH SLUG SOWBUG SPIDER TERMITE TICK WASP WEEVIL WHITEFLY WORM WOODBORER
P.S. Terrain rating is not nearly as hard as the number denotes. I chose it the way it is so cachers could have help filling their Fizzy challenge as 4s are rare around here