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NewsTimes of San DiegoJuly 29, 2026San Diego

City of San Diego considers resuming odor control spray at La Jolla Cove

The City of San Diego is seeking approval to resume spraying a bacterial cleaner on La Jolla Cove rocks to reduce odors caused by marine wildlife waste. The application process is currently under review by the City’s Development Services Department following a voluntary pause and regulatory review.

environmentwildlifesanitationLa JollaSan Diego
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Why It Matters

The city's proposal to use a chemical deodorizer on the rocks at La Jolla Cove could change the local environment and wildlife habitat, pending the approval of a .

Key Facts

  • The city has submitted a Coastal Development Permit in April 2026 to resume spraying.
  • The spray is a blend of non-pathogenic bacteria, surfactants, and cultures.
  • The proposed dilution ratio is 100 gallons of water to 10 gallons of deodorizer.
  • The California Regional Water Quality Control Board determined in 2025 that the spray does not require their regulation.
  • The city voluntarily paused spraying in 2023 following a request for information from the water board.
  • Best management practices include storm drain protection, spraying above high tide, and avoiding windy or rainy conditions.
  • A biological monitor must be present on-site during application.
  • The spray is intended to accelerate the natural breakdown of organic material into water and carbon dioxide.
  • The concentrate may cause skin sensitization if there is direct contact.
  • The city states the bacteria become inactive once the treated surface dries.

Who's Mentioned

personJennifer Leigh Warner“Wildlife conservation photographer expressing concerns about the spray.”organizationCalifornia Regional Water Quality Control Board“Regulatory body that reviewed the spray application.”locationLa Jolla Cove“The specific site where odor control is proposed.”organizationARK Environmental Solutions, Inc.“Manufacturer of the cleaning product.”locationSan Diego“The city government proposing the odor control measures.”