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

The following chart lists the effectiveness of the 6 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. Additionally, any items marked with an asterisk (*) are not confirmed effectiveness levels, thus there is the possibility that the information could be wrong.

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Mouse	Mouse Power Type	Physical Trap	Shadow Trap	Tactical Trap	Arcane Trap	Hydro Trap	Forgotten Trap
Abm. Snow	Physical	Normal	Normal	Normal	Normal	Normal	?
Acolyte	Arcane	Less Effective	Less Effective	Less Effective	Less Effective	Less Effective	Normal
Aged	Physical	Normal	Less Effective	Less Effective	Less Effective	Less Effective	?
Alchemist	Hydro	?	?	?	?	Very Effective	?
Alnilam	Tactical	?	?	Very Effective	?	?	?
Alnitak	Hydro	?	?	?	?	Very Effective	?
Archer	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
Assassin	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
Bat	Physical	Normal	Normal	Normal	Normal	Normal	Normal
Bear	Physical	Normal	Normal	Normal	Normal	Normal	?
Beast Tamer	Tactical	?	?	Very Effective	?	?	?
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	?	?	Very Effective	?	?	?
Centaur	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal	?
Chameleon	Physical	Normal	Normal	Normal	Normal	Normal	?
Champion	Hydro	Less Effective	Less Effective	Less Effective	Less Effective	Very Effective	?
Chitinous	Shadow	Less Effective	Very Effective	Less Effective	Less Effective	Less Effective	Less Effective
Conjurer	Tactical	?	?	Very Effective	?	?	?
Conqueror	Tactical	?	?	Very Effective	?	?	?
Cook	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective	?
Cyclops	Physical	Normal	Normal	Normal	Normal	Normal	?
Defender	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Less Effective	?
Derr Chieftain	Physical	Normal	Less Effective	Less Effective	Less Effective	Less Effective	?
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	Less Effective	Less Effective	Less Effective	Less Effective	Very Effective	?
Elf	Physical	Normal	Normal	Normal	Normal	Normal	?
Elub Chieftain	Hydro	Less Effective	Less Effective	Less Effective	Less Effective	Very Effective	?
Elven Princess	Physical	Normal	Normal	Normal	Normal	Normal	?
Fairy	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal	?
Fetid Swamp	Shadow	Less Effective	Very Effective	Less Effective	Less Effective	Less Effective	Less Effective
Finder	Tactical	?	?	Very Effective	?	?	?
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	Less Effective	Normal
Gate Guardian	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Less Effective	Normal
Ghost	Shadow	Less Effective	Very Effective	Less Effective	Normal	Less Effective	Less Effective
Giant Snail	Shadow	Less Effective*	Very Effective	Less Effective*	Normal	Less Effective*	Less Effective*
Gladiator	Physical	Normal	Less Effective	Less Effective	Less Effective	Less Effective	?
Goblin	Shadow	Less Effective	Very Effective	Less Effective	Normal	Less Effective	?
Gold	Physical	Normal	Normal	Normal	Normal	Normal	?
Golem	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Less Effective	Normal
Gorgon	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Less Effective	Normal
Grandfather	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Less Effective	?
Granite	Physical	Normal	Normal	Normal	Normal	Normal	?
Grey	Physical	Normal	Normal	Normal	Normal	Normal	?
Grunt	Physical	Normal	?	?	Less Effective	?	?
Guardian	Physical	Normal	Less Effective	Less Effective	Less Effective	Less Effective	?
Hapless	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
Harpy	Shadow	Less Effective	Very Effective	Less Effective	Normal	Less Effective	?
Healer	Physical	Normal	?	?	Less Effective	?	?
Hollowhead	Physical	Normal	Normal	Normal	Normal	Normal	?
Hydra	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective	?
Jurassic	Shadow	Less Effective	Very Effective	Less Effective	Less Effective	Less Effective	Less Effective
Keeper	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Less Effective	Normal
Kung Fu	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
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	Less Effective	Normal
Lycan	Shadow	Less Effective	Very Effective	Less Effective	Normal	Less Effective	?
Magma Carrier	Shadow	Less Effective	Very Effective	Less Effective	Less Effective	Less Effective	Less Effective
Master - Belt	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
Master - Claw	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
Master - Dojo	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
Master - Fang	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
Mermaid	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective	?
Mintaka	Physical	Normal	Less Effective	?	Less Effective	?	?
Mobster	Physical	Normal	Normal	Normal	Normal	Normal	?
Mole	Physical	Normal	Normal	Normal	Normal	Normal	?
Monk	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
Monster	Physical	Normal	Normal	Normal	Normal	Normal	?
Moosker	Physical	Normal	Normal	Normal	Normal	Normal	?
Mummy	Shadow	Less Effective	Very Effective	Less Effective	Normal	Less Effective	Less Effective
Mutated Grey	Physical	Normal	Normal	Normal	Normal	Normal	?
Mutated White	Physical	Normal	Normal	Normal	Normal	Normal	?
Mystic	Hydro	?	?	?	?	Very Effective	?
Narrator	Tactical	?	?	Very Effective	?	?	?
Nerg Chieftain	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Less Effective	?
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	Less Effective	Normal
Pack	Hydro	?	?	?	?	Very Effective	?
Pathfinder	Tactical	?	?	Very Effective	?	?	?
Pinchy	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective	?
Pirate	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal	?
Primal	Shadow	Less Effective	Very Effective	Less Effective	Less Effective	Less Effective	Less Effective
Protector	Hydro	Less Effective	Less Effective	Less Effective	Less Effective	Very Effective	?
Ravenous Zombie	Shadow	Less Effective	Very Effective	Less Effective	Normal	Less Effective	?
Reaper	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Less Effective	Normal
Renegade	Physical	Normal	?	Less Effective	Less Effective	?	?
Salt Water Snapper	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective	?
Samurai	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
Scavenger	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Less Effective	Normal
Scout	Hydro	?	?	?	?	Very Effective	?
Seer	Physical	Normal	?	?	Less Effective	?	?
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	Less Effective	Normal
Slayer	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	Less Effective	?
Soothsayer	Hydro	?	?	?	?	Very Effective	?
Spectre	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Less Effective	Normal
Spellbinder	Physical	Normal	?	?	Less Effective	Less Effective	?
Spider	Forgotten	Less Effective	Normal	Less Effective	Very Effective	Less Effective	Normal
Squeaken	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective	?
Steel	Physical	Normal	Normal	Normal	Normal	Normal	?
Stonework Warrior	Shadow	Less Effective	Very Effective	Less Effective	Less Effective	Less Effective	Less Effective
Student - Belt	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
Student - Claw	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
Student - Fang	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
Swabbie	Hydro	Normal	Less Effective	Less Effective	Less Effective	Very Effective	?
Sylvan	Physical	Normal	Normal	Normal	Normal	Normal	?
Taleweaver	Hydro	?	?	?	?	Very Effective	?
Terror Knight	Shadow	Less Effective*	Very Effective	Less Effective*	Normal	Less Effective*	Less Effective*
Tiger	Tactical	Normal	Less Effective	Very Effective	Less Effective	Normal	?
Trailblazer	Physical	Normal	?	?	Less Effective	?	?
Treant	Physical	Normal	Normal	Normal	Normal	Normal	?
Troll	Physical	Normal	Normal	Normal	Normal	Normal	?
Vampire	Shadow	Less Effective	Very Effective	Less Effective	Normal	Less Effective	Less Effective
Vanquisher	Hydro	?	?	?	?	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	Less Effective	Normal
Wordsmith	Physical	Normal	?	?	Less Effective	?	?
Worker	Tactical	Less Effective	Less Effective	Very Effective	Less Effective	?	?
Zombie	Physical	Normal	Normal	Normal	Normal	Normal	?
Mouse	Power Type	Physical	Shadow	Tactical	Arcane	Hydro	Forgotten

• Rockstar Mouse (previously 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.
• Shadow traps have been noted to be of normal effectiveness against Harpy mice.

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
• Catch Rate Estimates by Pooflinger's Tools.
• Effectiveness of Power Types by MouseHunt Analytics