Hypersensitivity Resource Center

Protecting individuals with allergies, asthma, chemical sensitivities, and vulnerable populations. Know your rights, understand ingredients, and access state registry information.

State Pesticide Registries

Pennsylvania Pesticide Hypersensitivity Registry

Pennsylvania maintains an official state registry for individuals with documented hypersensitivity to pesticides. This registry is a legal protection mechanism that requires commercial pesticide applicators to check before treating properties within 500 feet of registered individuals.

How It Works

Citizens with verified medical conditions (asthma, chemical sensitivities, allergies, or other documented conditions) can register with the Pennsylvania Department of Agriculture. Once registered, your address is added to the state database. Before any commercial pesticide application, licensed applicators are legally required to check the registry and provide advance notice (typically 24-48 hours) to all registered individuals within 500 feet of the treatment area. This allows time to take precautions, vacate if necessary, or request alternative treatment methods.

Register Now

Pennsylvania residents can register with the official state pesticide hypersensitivity registry:

Visit PA Department of Agriculture Registry

Legal Requirements for Pest Control Operators

Under Pennsylvania's Pesticide Hypersensitivity Registry Law (3 Pa.C.S. ยง 111.24), commercial pesticide applicators MUST check the registry before any outdoor pesticide application and provide written notification to all registrants within 500 feet of the treatment site at least 24 hours in advance (48 hours preferred). Notification must include: applicator name and certification number, pesticide product name and EPA registration number, date and approximate time of application, and contact information. Failure to comply can result in fines, license suspension, or revocation.

Instructions for Operators

Step 1: Access the registry through PA Department of Agriculture's online portal or call (717) 787-4843. Step 2: Enter the treatment address and verify a 500-foot radius check. Step 3: If registrants are found, send written notification at least 24 hours before application (certified mail or hand delivery recommended). Step 4: Include all required details: your name, PA license number, pesticide product names, EPA reg numbers, treatment date/time, and your contact phone/email. Step 5: Keep a copy of the notification and delivery confirmation for your records for at least 3 years.

Your Rights as a Citizen

Pennsylvania residents have the right to: (1) Register with the state if they have documented medical conditions aggravated by pesticides, (2) Receive advance written notice before any commercial pesticide application within 500 feet of their property, (3) Request information about the pesticides being used and request Material Safety Data Sheets (MSDS), (4) Request alternative treatment methods or ask the pest control company to use lower-toxicity products, (5) File a complaint with the PA Department of Agriculture if an applicator fails to provide notice or violates registry requirements, and (6) Remain on the registry indefinitely or request removal at any time.

Contact Information

Department: PA Department of Agriculture - Bureau of Plant Industry

Phone: (717) 787-4843

Email: RA-pesticide@pa.gov

Website: https://www.agriculture.pa.gov

Address: 2301 North Cameron Street, Harrisburg, PA 17110

Pesticide Ingredients Database

Pyrethroids (Permethrin, Cypermethrin)

moderate Risk
Not Pet-Safe Not Child-Safe

Common Products

Household insect spraysAnt and roach baitsTermite treatments

Potential Symptoms

  • Skin irritation
  • Respiratory issues
  • Allergic reactions
  • Asthma triggers

Safety Precautions

  • Ensure proper ventilation during application
  • Keep pets away for 24 hours
  • Wear protective clothing
  • Ask about non-pyrethroid alternatives

Safer Alternatives

Diatomaceous earth, boric acid, or natural essential oil-based products

Organophosphates (Chlorpyrifos, Malathion)

high Risk
Not Pet-Safe Not Child-Safe

Common Products

Commercial pest control treatmentsAgricultural pesticides

Potential Symptoms

  • Neurological effects
  • Respiratory distress
  • Skin burns
  • Nausea

Safety Precautions

  • Vacate premises during treatment
  • Ensure 48-hour re-entry time
  • Request alternative treatments
  • Medical alert for asthma patients

Safer Alternatives

Integrated Pest Management (IPM) methods, biological controls

Fipronil

moderate Risk
Not Pet-Safe Not Child-Safe

Common Products

Termite treatmentsAnt baitsCockroach gel

Potential Symptoms

  • Skin irritation
  • Headaches
  • Dizziness
  • Respiratory issues

Safety Precautions

  • Keep children away from treated areas
  • Pets should avoid contact for 24-48 hours
  • Ensure baits are in tamper-resistant stations

Safer Alternatives

Bait stations with lower-risk ingredients, heat treatments for termites

Boric Acid

low Risk
Pet-Safe Child-Safe

Common Products

Cockroach dustAnt baitsWood preservatives

Potential Symptoms

  • Mild skin irritation (rare)
  • Eye irritation if direct contact

Safety Precautions

  • Keep powder out of reach of children
  • Use in cracks and crevices only
  • Avoid ingestion

Safer Alternatives

Generally considered one of the safest options

Diatomaceous Earth (Food Grade)

low Risk
Pet-Safe Child-Safe

Common Products

Natural insect powderBed bug treatmentsFlea control

Potential Symptoms

  • Respiratory irritation if inhaled (use with mask)
  • Mild skin dryness

Safety Precautions

  • Use food-grade version only
  • Wear mask during application
  • Safe once settled

Safer Alternatives

One of the safest natural alternatives available

Neonicotinoids (Imidacloprid)

moderate Risk
Not Pet-Safe Not Child-Safe

Common Products

Termite treatmentsSystemic insecticidesPerimeter treatments

Potential Symptoms

  • Skin sensitivity
  • Respiratory concerns
  • Potential nervous system effects

Safety Precautions

  • Children should not contact treated surfaces for 24 hours
  • Keep pets indoors during application
  • Ensure proper ventilation

Safer Alternatives

Mechanical barriers for termites, natural repellents

Questions to Ask Before Treatment

What pesticide products will you be using? Request the product name, EPA registration number, and active ingredients.

Can I see the label and Safety Data Sheet? Federal law requires companies to provide this information upon request.

Do you offer lower-toxicity alternatives? Ask about Integrated Pest Management (IPM) and least-toxic options.

How long should I keep children and pets away? Understand re-entry times and safety waiting periods.

What precautions will you take to prevent drift? Especially important for outdoor applications near homes.

Have you checked the state hypersensitivity registry? In Pennsylvania, this is a legal requirement.

Official Safety Resources

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