SPOKANE — Northwoods community residents returning to their properties after the Upriver Fire are finding a red or pink residue on roads, roofs, vehicles, and fences. That residue is aerial fire retardant — a fertilizer-based product dropped by aircraft to slow the wildfire’s spread.
Spokane County Fire District 9 says the retardant does not pose a significant health risk to most people, but it can cause temporary skin or eye irritation. Residents should wash their hands after handling it and wear gloves during cleanup if desired.
Cleaning by surface type
Smooth surfaces: Garden hose and mild soap; a soft brush may help.Painted surfaces: Wash when practical. Staining may occur if left for extended periods.Stone, concrete, and brick: Water and a soft brush. Avoid high-pressure washing on porous surfaces.Toys, play areas, and pools: Wash with soap and water before use.Roofs: Use gentle water flow and mild soap. Avoid high-pressure washing, which can damage shingles or force residue under edges.Solar panels: Rinse with clean water; use a soft cloth with mild soap if needed. Avoid abrasive pads or high-pressure washing.
Pets and gardens
Small incidental exposure is generally not expected to harm pets. Residents with concerns should contact their veterinarian. Thoroughly wash fruits and vegetables before eating them, and discard produce heavily coated with retardant.
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