-Counter Kill All Buildings: Use Stupid Jasons (Protoss Reaver) or Mouse Holes (Terran Civilian) because they do not get killed when this spell is used, and they still have very high hit points to use as a wall.
-Counter Infesteds from Queen: Build cannons and it will stop the Infesteds relatively quick.
-Counter air units: Build Cheese Towers (Terran Missile Turret) with a Stupid fred (SCV) and it will prevent any EMP's, Ensnares, Irradiates, Meltdowns, Parasites, or Spawn Infesteds.
-Counter BB Mode: Build either 4-Leg Oranges (Protoss Dragoons), Mad Jeremys (Protoss Archon), or Cheese Towers (Terran Missile Turret) to greatly lower the hit points.
-Counter 1 Jail Guard: 4 Stupid Devins (Devouring One - Zerg Zergling)
-Counter 2 Jail Guards: 6 Stupid Devins (Devouring One - Zerg Zergling)
-Hotkeys: 1 - Mouse (Protoss Probe); 2 - Chooser (Protoss Dark Templar); 3 (in beginning only - Stupid Fred (Terran SCV); 3-5 - Mouse Upgrades (Weapons, Armor, and Shields)

-Counter Stupid Freds (Terran SCV): Use Irradiate on your Speedy Interceptor (Protoss Corsair) and have it fly over the Mice' SCVs to cripple their economy.
-Combo: Kill All Stupid Freds (2+1) and Burn Money (1)
-Combo: Monkey Vessel (1+1) and Speedy Interceptor (1)
-Combo: Baby Cat (3+1) - Use it to help you trap the Mice with your Cat.
-Timing: Use Kill All Buildings (3) right before an enemy Mouse builds a strong building.
-Timing: Use Burn Money (1) right before an enemy Mouse builds a strong building.
-Tip: Irradiate your Cat (Zerg Ultralisk) next to a Mouse Hole (Terran Civilian) if you have higher upgrades so you can go right to the next Mouse Hole (Terran Civilian) with your Cat (Zerg Ultralisk).
-Tip: 5 Carcapace upgrades almost neutralizes Mice' Eric's Cat Poison (Protoss Photon Cannon).
-Hotkeys: 1 - Cat (Zerg Ultralisk); 2 - Upgrades; 3-0 - Choosers (Protoss Dark Templars)

-The pictures above are all of working placements of Stupid Jasons because the Cat is too wide to go through with the single one, but not tall.





-The pictures above are all wrong placements of a Stupid Jason because a Cat is not tall, so it can easily bypass the single Stupid Jason in a horizontal opening. Same with the Stupid Jason with a vertical opening, except that it is not wide enough to cover the opening.

-The above images of the Mouse Holes work perfectly with no gaps in between them so the Cat cannot walk through.









-These do not work because they all have 1 single Mouse Hole that cannot completely block the entrance. The only way to block with Mouse Holes is with 2 or more.

-Space Cheese (Protoss Arbiter Tribunal):


--To seal the path with Space Cheese so that you can go through but Cat cannot, all you have to do is build the Space Cheese while leaving a 1x1 space horizontally for your mice to go through. Below are 2 examples that the walling works.

--The below example is a walling that DOES NOT work:



--The reason why this wall does not work is that there is a 1x1 space vertically between the edge and the wall, leaves it open for Cat to go through.

-Hardest Cheese (Protoss Fleet Beacon):

--To seal the path with Fleet Beacon so that you can go through but Cat cannot, all you have to do is build the Hardest Cheese while leaving a 1x1 space on the right side for your mice to go through. Below is 1 example that walling works.



--The below examples are walling that DO NOT work:



--The reason why this wall does not work is that there is a 1x1 space vertically between the edge and the wall, leaves it open for Cat to go through.



--The reason why this wall does not work is that there is a 1x1 space horizontally between the water and the wall, leaves it open for Cat to go through.

(Top Middle or Bottom Middle Bases)

(Corner Bases)

(Middle Right or Middle Left Bases)

(Top Middle or Bottom Middle Bases)

(Top Middle or Bottom Middle Bases)

(Corner Bases)

(Middle Right or Middle Left Bases)

(Top Middle or Bottom Middle Bases)

(Middle Left or Right Bases)