The 2025 Landscape Pesticide Registry is available on the DATCP website at https://datcp.wi.gov/Pages/Programs_Services/LandPestReg.aspx.
The dataset of registered properties and participants is available as a sortable spreadsheet, as a PDF, and as an interactive map. The web map is a visual reference to display parcels listed on the Registry. Users can zoom in to a specific city or address and look for yellow circles that identify properties listed on the registry. You should still use the downloadable spreadsheet or PDF file to verify if your customer’s address is registered.
If your customer’s address is on the registry, you should provide advanced notice to the person listed at that particular address. This must be done at least 12 hours prior to your business making a landscape pesticide application. This includes application to turf, ornamentals, trees, shrubs, lawns, mulched areas, or to control adult mosquitos. Ch ATCP 29.56(8) Wis Adm Code requires you provide the following information:
- ATCP 29.56: Note name, address, and telephone number of the business making the application.
- Address of the landscape to be treated.
- Scheduled date of application. If the date changes after you give notice, you must give a revised notice.
- The brand name, product name, or common chemical name of each pesticide that may be applied.
Homeowners and renters must annually sign up if they want to know in advance when a business is going to apply pesticides to neighboring properties. The 2025 registry is valid between March 15, 2025 and March 14, 2026.
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