How many days does a non-licensed employee have to become licensed as an applicator?

The correct answer is 90 days because, typically, regulations regarding non-licensed employees in the context of applicator licensing require them to obtain their license within this timeframe after beginning their employment. This period is established to ensure that individuals have adequate time to meet the necessary training and education requirements prior to being permitted to perform applicator duties independently. This timeframe helps maintain safety standards in the application of pesticides by ensuring that all applicators are properly trained and certified.

The other options do not match the established regulations, as they suggest shorter or longer timeframes that would not align with the requirements set forth by relevant regulatory bodies overseeing pesticide application practices.