# Backyard Mosquito Spraying Fuels Insecticide Resistance Mosquito resistance to insecticides is rising in wealthier neighborhoods. - **Source:** [Reddit Science](https://brifing.si/source/1294ffb3-9f44-431d-8cd2-05584c8d9014) - **Published:** 2026-07-19 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/5bc4b440-1d2b-498a-853d-4b7f3a0b81fd ## Impact of Mosquito Spraying Backyard mosquito spraying is increasing insecticide resistance, particularly in tiger mosquitoes. While no resistance was detected in 2016-2017, it was found in 84% of sampled residential blocks by 2023. ## Rising Resistance in Wealthier Areas Resistance-associated mutations are becoming more common in wealthier neighborhoods. Intensive spraying practices in these areas are driving mosquitoes to develop resistance. ## Spread of Mutations Research shows that resistance-linked mutations are spreading rapidly. These mutations make mosquitoes more resilient to insecticides. ## Role of Spraying Intensity Increased spraying intensity in residential areas accelerates mosquito resistance. This reduces the effectiveness of insecticides. ## Health Risks Mosquito resistance to insecticides could increase the risk of disease transmission. This poses a serious threat to public health. ## Future Measures More effective and sustainable mosquito control methods are needed to prevent resistance. This is crucial for protecting public health. ## Sources covering this story - https://www.reddit.com/r/science/comments/1v0nuoz/backyard_mosquito_spraying_may_be_driving/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._