Effectiveness

Effectiveness refers to the bonus (or penalty) when using a Trap against Mice of different Power Types. It is believed to be a modifier applied on the Power or Luck values of a Trap, or possibly both.

Players should avoid hunting at a location where their current traps will be less effective against most of the mice there, such as the Mousoleum without a Shadow/Arcane trap, or the Furoma region without a Tactical trap.

Effectiveness Levels

A Trap can have 1 of 3 possible effectiveness levels against a mouse:

Very Effective

A very effective message implies that there was a bonus to the trap power/luck in catching the mouse. No message is shown if the catch result was a miss.

Normal Effectiveness

No additional message is shown for a normal catch. This implies that no modifier has been applied to the current trap power/luck in catching the mouse, and is the most commonly encountered effectiveness level. No message is shown if the catch result was a miss.

Less Effective

A less effective message will appear when there is a penalty to the trap power/luck in attracting a mouse and the catch result was a miss. This usually indicates that the wrong trap type is being used for the current location. No message is shown if it was a successful catch.

• Note that trap effectiveness has no bearing on the Attraction Rate of a trap and the type of mice attracted, which is dependent on the baited cheese.

Effectiveness Chart

This following chart lists the effectiveness of the 5 existing Trap Power Types against the different breeds of mice. There are some exceptions to the chart, and these have been noted under the exceptions section.

Mouse	Mouse Power Type	Physical Trap	Shadow Trap	Tactical Trap	Arcane Trap	Hydro Trap
Abm. Snow	Physical	Normal	Normal	Normal	Normal	Normal
Acolyte	Arcane	Less Effective	Less Effective	Less Effective	Less Effective	Unknown
Aged	Physical	Normal	Unknown	Unknown	Unknown	Unknown
Alchemist	Hydro	Unknown	Unknown	Unknown	Unknown	Very Effective
Alnilam	Tactical	Unknown	Unknown	Very Effective	Unknown	Unknown
Alnitak	Hydro	Unknown	Unknown	Unknown	Unknown	Very Effective
Archer	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Assassin	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Bat	Physical	Normal	Normal	Normal	Normal	Normal
Bear	Physical	Normal	Normal	Normal	Normal	Normal
Beast Tamer	Tactical	Unknown	Unknown	Very Effective	Unknown	Unknown
Bionic	Physical	Normal	Normal	Normal	Normal	Normal
Black Widow	Physical	Normal	Normal	Normal	Normal	Normal
Bottled	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective
Brown	Physical	Normal	Normal	Normal	Normal	Normal
Burglar	Physical	Normal	Normal	Normal	Normal	Normal
Caretaker	Tactical	Unknown	Unknown	Very Effective	Unknown	Unknown
Centaur	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal
Chameleon	Physical	Normal	Normal	Normal	Normal	Normal
Champion	Hydro	Unknown	Unknown	Unknown	Unknown	Very Effective
Cook	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective
Conjurer	Tactical	Unknown	Unknown	Very Effective	Unknown	Unknown
Conqueror	Tactical	Unknown	Unknown	Very Effective	Unknown	Unknown
Cyclops	Physical	Normal	Normal	Normal	Normal	Normal
Derr Chieftain	Physical	Normal	Unknown	Unknown	Unknown	Unknown
Defender	Tactical	Unknown	Unknown	Very Effective	Unknown	Unknown
Diamond	Physical	Normal	Normal	Normal	Normal	Normal
Dwarf	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal
Eagle Owl	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal
Elder	Hydro	Unknown	Unknown	Unknown	Unknown	Very Effective
Elf	Physical	Normal	Normal	Normal	Normal	Normal
Elub Chieftain	Hydro	Unknown	Unknown	Unknown	Unknown	Very Effective
Elven Princess	Physical	Normal	Normal	Normal	Normal	Normal
Fairy	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal
Finder	Tactical	Unknown	Unknown	Very Effective	Unknown	Unknown
Foxy	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal
Frog	Physical	Normal	Normal	Normal	Normal	Normal
Gargoyle	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Unknown
Gate Guardian	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Unknown
Ghost	Shadow	Less Effective	Very Effective	Less Effective	Normal	Unknown
Gladiator	Physical	Normal	Unknown	Unknown	Unknown	Unknown
Goblin	Shadow	Less Effective	Very Effective	Less Effective	Normal	Unknown
Gold	Physical	Normal	Normal	Normal	Normal	Normal
Golem	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Unknown
Gorgon	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Unknown
Grandfather	Tactical	Unknown	Unknown	Very Effective	Unknown	Unknown
Granite	Physical	Normal	Normal	Normal	Normal	Normal
Grey	Physical	Normal	Normal	Normal	Normal	Normal
Grunt	Physical	Normal	Unknown	Unknown	Unknown	Unknown
Guardian	Physical	Normal	Unknown	Unknown	Unknown	Unknown
Hapless	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Harpy	Shadow	Less Effective	Normal	Less Effective	Normal	Unknown
Healer	Physical	Normal	Unknown	Unknown	Unknown	Unknown
Hollowhead	Physical	Normal	Normal	Normal	Normal	Normal
Hydra	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective
Keeper	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Unknown
Kung Fu	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Leprechaun	Physical	Normal	Normal	Normal	Normal	Normal
Leviathan	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective
Lich	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Unknown
Lycan	Shadow	Less Effective	Very Effective	Less Effective	Normal	Unknown
Master - Belt	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Master - Claw	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Master - Dojo	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Master - Fang	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Mermaid	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective
Mintaka	Physical	Normal	Unknown	Unknown	Unknown	Unknown
Mobster	Physical	Normal	Normal	Normal	Normal	Normal
Mole	Physical	Normal	Normal	Normal	Normal	Normal
Monk	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Monster	Physical	Normal	Normal	Normal	Normal	Normal
Moosker	Physical	Normal	Normal	Normal	Normal	Normal
Mummy	Shadow	Less Effective	Very Effective	Less Effective	Normal	Unknown
Mutated Grey	Physical	Normal	Normal	Normal	Normal	Normal
Mutated White	Physical	Normal	Normal	Normal	Normal	Normal
Mystic	Hydro	Unknown	Unknown	Unknown	Unknown	Unknown
Narrator	Tactical	Unknown	Unknown	Unknown	Unknown	Unknown
Nerg Chieftain	Tactical	Unknown	Unknown	Unknown	Unknown	Unknown
Nibbler	Physical	Normal	Normal	Normal	Normal	Normal
Ninja	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal
Nomad	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal
Ooze	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Unknown
Pack	Hydro	Unknown	Unknown	Unknown	Unknown	Very Effective
Pathfinder	Tactical	Unknown	Unknown	Very Effective	Unknown	Unknown
Pinchy	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective
Pirate	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal
Protector	Hydro	Unknown	Unknown	Unknown	Unknown	Very Effective
Rvns. Zombie	Shadow	Less Effective	Very Effective	Less Effective	Normal	Unknown
Reaper	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Unknown
Renegade	Physical	Normal	Unknown	Unknown	Unknown	Unknown
Salt Water Snapper	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective
Samurai	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Scavenger	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Unknown
Scout	Hydro	Unknown	Unknown	Unknown	Unknown	Very Effective
Seer	Physical	Normal	Unknown	Unknown	Unknown	Unknown
Shaman	Physical	Normal	Normal	Normal	Normal	Normal
Shelder	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective
Shipwrecked	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective
Siren	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective
Skeleton	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Unknown
Slayer	Tactical	Unknown	Unknown	Very Effective	Unknown	Unknown
Soothsayer	Hydro	Unknown	Unknown	Unknown	Unknown	Very Effective
Spectre	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Unknown
Spellbinder	Physical	Normal	Unknown	Unknown	Unknown	Unknown
Spider	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Unknown
Squeaken	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective
Steel	Physical	Normal	Normal	Normal	Normal	Normal
Student - Belt	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Student - Claw	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Student - Fang	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Sylvan	Physical	Normal	Normal	Normal	Normal	Normal
Swabbie	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective
Taleweaver	Hydro	Unknown	Unknown	Unknown	Unknown	Very Effective
Tiger	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal
Trailblazer	Physical	Normal	Unknown	Unknown	Unknown	Unknown
Treant	Physical	Normal	Normal	Normal	Normal	Normal
Troll	Physical	Normal	Normal	Normal	Normal	Normal
Vampire	Shadow	Less Effective	Very Effective	Less Effective	Normal	Unknown
Vanquisher	Hydro	Unknown	Unknown	Unknown	Unknown	Very Effective
Water Nymph	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal
White	Physical	Normal	Normal	Normal	Normal	Normal
Wicked Witch	Physical	Normal	Normal	Normal	Normal	Normal
Wiggler	Physical	Normal	Normal	Normal	Normal	Normal
Wight	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Unknown
Wordsmith	Physical	Normal	Unknown	Unknown	Unknown	Unknown
Worker	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Unknown
Zombie	Physical	Normal	Normal	Normal	Normal	Normal
Mouse	Power Type	Physical	Shadow	Tactical	Arcane	Hydro

• iTunes Mouse, Master Burglar Mouse are not included.

Exceptions

• Ninja mice have been noted to be resistant to Physical Traps in the Dojo.
• Physical traps have been noted to be of normal effectiveness against most Tactical mice in the Training Grounds, except against the Assassin Mouse.
• Physical traps are of normal effectiveness against Tactical mice in the Calm Clearing.
• Some, if not all, Physical mice resist Arcane damage in the Tribal Isles.

History of Changes

• When Arcane traps were first released, it was tested and found to be of Normal Effectiveness against the Master of the Dojo, a Tactical type mouse. However, shortly before the release of the ACRONYM, it was found to have changed to be Less Effective.

See Also

• Cheat Sheet – Condensed Effectiveness Chart
• Hunting Sequence – Official information on how a mouse catch is calculated
• Power Type – List of the different power types available
• Forum Discussion by Adrian Hew, which provided the chart information.
• Catch Rate Estimates by Pooflinger's Tools.
• Trap Effectiveness by MouseHunt Analytics