{"hq_id":"hq-p-out-000045","name":"Mosquito Fogger and Yard Spray (Pyrethroid-Based)","category":{"primary":"outdoor","secondary":"pest_control","tags":["mosquito spray","pyrethroid","permethrin","cypermethrin","insecticide","drift"]},"product_tier":"OUT","overall_risk_level":"moderate_to_high","description":"Outdoor mosquito foggers and yard sprays containing synthetic pyrethroids (permethrin, cypermethrin, bifenthrin). Applied via thermal fogger, cold fogger, or hose-end sprayer. Pyrethroids are neurotoxic to insects and aquatic organisms, and are endocrine disruptors in humans. Spray drift affects neighboring properties and waterways.","synthesis":{"derived_risk_level":"moderate","synthesis_confidence":0.82,"synthesis_method":"compound_composition","context_used":"human_adult","context_source":"product_users","exposure_modifier":0.935,"vulnerability_escalated":true,"escalation_reason":"Child exposure group","compounds_resolved":2,"compounds_total":2,"synthesis_date":"2026-03-27","synthesis_version":"1.0.0"},"hazard_summary":{"sensitive_populations":"children, aquatic organisms, pollinators","overall_risk":"moderate_to_high","primary_concerns":["Pyrethroid neurotoxicity and endocrine disruption in humans","Extreme aquatic toxicity — orders of magnitude more toxic to fish than mammals","Pollinator harm — pyrethroids are toxic to bees and beneficial insects"],"exposure_routes":"Dermal contact with treated surfaces; inhalation of spray drift"},"exposure":{"routes":["dermal","inhalation"],"contact_types":["skin_brief","inhalation"],"users":["adult","child"],"duration":"hours","frequency":"monthly","scenarios":["Spray drift exposure to neighbors during application","Re-entry to treated yard before recommended waiting period","Children and pets contacting treated lawn and landscaping","Runoff into storm drains and waterways after rain"],"notes":"Pyrethroids are 100-1000x more toxic to aquatic organisms than mammals. Drift from yard sprays can travel 30-100 feet. Re-entry interval is typically 2-4 hours but residues persist on surfaces for days to weeks. CDC biomonitoring shows 75% of US adults have detectable pyrethroid metabolites."},"consumer_guidance":{"usage_warning":"Apply only when wind is calm to minimize drift. Notify neighbors before application. Keep children and pets off treated areas for minimum recommended re-entry interval. Do not apply near water bodies, storm drains, or pollinator habitat.","safer_alternatives":["Mosquito dunks (BTI) in standing water — targets larvae, safe for mammals","Citronella and essential oil repellents for personal protection","Fan-based mosquito deterrent systems","Habitat modification (eliminating standing water)"],"alternatives":[{"name":"Mosquito dunks","notes":"BTI) in standing water — targets larvae, safe for mammals"},{"name":"Citronella and essential oil repellents for personal protection","notes":"Safer alternative to conventional products"},{"name":"Fan-based mosquito deterrent systems","notes":"Safer alternative to conventional products"},{"name":"Habitat modification","notes":"eliminating standing water"}],"red_flags":[{"indicator":"Product used in enclosed or poorly ventilated space","meaning":"Chemical exposure concentrations increase dramatically in enclosed spaces.","action":"Use only in well-ventilated outdoor areas as intended."}],"green_flags":[{"indicator":"Third-party safety certification visible on packaging","meaning":"Product has been independently tested to applicable safety standards.","verification":"Look for certification logos (CPSIA, ASTM, EN, NSF, UL, OEKO-TEX)."}],"what_to_ask":[{"question":"What materials is this product made from?","why_it_matters":"Material composition determines chemical exposure potential.","good_answer":"Full material disclosure with known safe materials.","bad_answer":"No material information or unspecified."}]},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"EPA FIFRA / TSCA (as applicable)","citation":null,"requirements":"Pesticide registration under FIFRA. Chemical substances under TSCA.","compliance_status":null,"effective_date":null,"enforcing_agency":"EPA","penalties":null,"source_ref":null},{"jurisdiction":"USA -- California","regulation":"California Proposition 65","citation":null,"requirements":"Products containing listed chemicals require warnings.","compliance_status":null,"effective_date":null,"enforcing_agency":"OEHHA","penalties":null,"source_ref":null}],"certifications":[],"labeling":{"required_disclosures":[],"prop65_warning":{"required":null,"chemicals":[],"endpoint":null,"notes":null},"ghs_labeling":{"required":null,"signal_word":null,"pictograms":[],"hazard_statements":[],"notes":null},"hidden_ingredients":{"trade_secret_protected":null,"categories_hidden":[],"estimated_count":null,"known_concerns":null,"notes":null},"notes":null},"recalls":[],"regulatory_gap":null,"notes":null},"lifecycle":{"recyclable":false,"disposal_guidance":"Triple-rinse containers. Hazardous waste facility for unused product.","hazardous_waste":true,"expected_lifespan":"single_use"},"formulation":{"form":"varies","key_ingredients":[{"hq_id":"hq-c-org-000361","name":"Cypermethrin","role":"active_ingredient","concentration_pct":"0.5-5"},{"hq_id":"hq-c-org-000365","name":"Cyfluthrin","role":"active_ingredient","concentration_pct":"0.5-5"}],"certifications":[]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-org-000361","compound_name":null,"role":"active_ingredient","typical_concentration":"0.5-5%"},{"hq_id":"hq-c-org-000365","compound_name":null,"role":"active_ingredient","typical_concentration":"0.5-5%"}],"identifiers":{"common_names":["mosquito fogger and yard spray (pyrethroid-based)"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"Cutter Backyard","manufacturer":"Spectrum Brands","market_position":"mass_market","notable":"Yard mosquito spray"},{"brand":"OFF! Deep Woods","manufacturer":"SC Johnson","market_position":"mass_market","notable":"Mass-market insect repellent"},{"brand":"Thermacell","manufacturer":"Thermacell","market_position":"premium","notable":"Zone mosquito repellent device"}],"sources":[{"type":"expert_curation","name":"ALETHEIA Safety Database","date":"2026-03-25"},{"type":"regulation","title":"EPA FIFRA / TSCA (as applicable)","jurisdiction":"USA","id":"src_70a4d79c"},{"type":"regulation","title":"California Proposition 65","jurisdiction":"USA -- California","id":"src_fe1d5adc"},{"id":"epa_pyrethroid_reregistration_2011","type":"regulatory","title":"US EPA Pyrethroid Reregistration Eligibility Decision — cypermethrin/deltamethrin/lambda-cyhalothrin/bifenthrin/cyfluthrin/fenvalerate/tau-fluvalinate/fenpropathrin; type I/II classification; aquatic toxicity; cat sensitivity; sodium channel mechanism; human paresthesia; buffer zones (2011)","year":2011,"inherited_from_compound":"hq-c-org-000361"},{"id":"aspca_apcc_pyrethroid_2023","type":"veterinary","title":"ASPCA Animal Poison Control Center: Pyrethroid Toxicosis in Cats and Dogs — type I vs type II CS/T syndromes; extreme cat sensitivity (sodium channel/UGT deficiency); bathing decontamination; methocarbamol tremor control; cyproheptadine; lipid emulsion severe cases (2023)","year":2023,"inherited_from_compound":"hq-c-org-000361"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-01T14:20:20.110Z"}}