Cheese Effect

"Anytime a mouse is not attracted to a trap during a hunt there is a chance for the cheese to turn stale. Some components are built using harmful chemicals that increase the odds of spoiling bait. Traps with a positive cheese effect help reduce the likelihood of cheese turning stale."

The cheese effect of bases and weapons determines the rate at which cheese stales. The available levels were previously very negative, negative, positive, very positive or no effect at all. The combined levels of cheese effect, depending on the particular bases and weapons that are combined, were previously extremely negative, very negative, negative, positive, very positive, extremely positive or no effect at all.

As of version 2.3.1, cheese effects have been changed to variations of "Fresh" and "Stale." Combinations of these result in cheese effects that include: Extremely Stale, Very Stale, Stale, No Effect, Fresh, Very Fresh, Extremely Fresh, Insanely Fresh, Ultimately Fresh, and Über Fresh.

Regardless of the cheese effect of the hunter's trap and base combination, the only cheese that is immune from going stale is Super Brie, although its immunity only works in the region of Gnawnia.