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The National Pesticide Information Retrieval System (NPIRS) database at https://ppis.ceris.purdue.edu contains information about registered pesticides at the state and federal levels. The Web site is free to access.
The NPIRS federal database includes the Office of Pesticide Programs registered and canceled pesticide products, chemical ingredients, company information and a label system if the product registration number is known.
The state database is searchable by active ingredient, site of application, pest to be controlled, Environmental Protection Agency registration number, product name and company name. Multiple criteria can be entered through a series of steps to narrow the products listed.
Registered states are Arizona, California, Colorado, Florida, Georgia, Hawaii, Idaho, Indiana, Iowa, Kansas, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Nevada, New Hampshire, New Jersey, New Mexico, New York, Ohio, Pennsylvania, Rhode Island, Texas and Virginia. Source: Purdue University
Francisco Uviña, University of New Mexico
Hardscape Oasis in Litchfield Park
Ash Nochian, Ph.D. Landscape Architect
November 12th, 2025
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