Cat Toy Plush Sheep

Toys that are sealed well and made to keep the catnip inside, such as fabric pouches or plush toys, may retain the scent for longer periods. On the other hand, toys made from materials that allow airflow could result in quicker loss of scent and potency. Like many herbs, catnip is sensitive to air and light exposure.

When a toy is left out in the sun or opened to the air frequently, the catnip inside can lose its effectiveness relatively quickly. Storing catnip toys in a cool, dark place can help maintain their potency and longevity. Signs that catnip is losing potency include diminished reactions from the cat, a dull or faded appearance of the toy, and a lack of strong catnip fragrance.