In which scenario must an individual be certified as a commercial applicator?

An individual must be certified as a commercial applicator when applying pesticides for hire on someone else's property because this activity involves public safety and environmental protection. Commercial applicators are required to undergo training and obtain certification to ensure they have the knowledge and skills necessary to apply pesticides safely and effectively. Certification includes an understanding of pesticide regulations, proper application techniques, handling of chemicals, and awareness of potential impacts on non-target organisms, human health, and the environment.

In contrast, applying pesticides in personal gardens, under personal supervision, or in custodial roles may not require certification since these activities typically pertain to private use and do not involve the risk of broader exposure that commercial applications might pose. The distinction emphasizes the importance of proper training and accountability when pesticides are applied in public or on behalf of others, thereby safeguarding both public health and environmental integrity.