Every answer we have published
461 questions, each answered in the opening sentences with every source linked. If you came to pick a product instead, the graded roundups and the home audit are the faster route.
PFAS and nonstick coatings
- Which Cosmetic Ingredients Are PFAS?
- What Is PFAS?
- What Is GenX?
- What Is PFOA, and How Is It Different From PFAS?
- What Is PTFE, and Is It a PFAS?
- Is Teflon Banned?
- Is There a List of PFAS Chemicals?
- How Do I Test My Water for PFAS?
- Should I Get a PFAS Blood Test?
- How Can I Reduce My Exposure to PFAS?
- Is Teflon (PTFE) Cookware Safe?
- What Is PFOS?
- Is There PFAS in Clothing?
- Is There PFAS in Toilet Paper?
- Is There PFAS in Bottled Water?
- What Is Teflon Flu?
- Does Reverse Osmosis Remove PFAS?
- What Is AFFF Firefighting Foam?
- What Are the PFAS Lawsuits?
Getting rid of hazardous products
- What Is Household Hazardous Waste, and How Do You Get Rid of It?
- How Do You Dispose of Lithium Batteries?
- How Do You Dispose of Old Paint?
- How Do You Dispose of Used Motor Oil?
- How Do You Dispose of Fluorescent Bulbs and CFLs?
- How Do You Dispose of Old Medication?
- How Do You Dispose of Propane Tanks?
- How Do You Dispose of Batteries?
- How Do You Dispose of Cooking Oil?
- How Do You Dispose of Old Gasoline?
- How Do You Dispose of a Fire Extinguisher?
- How Do You Dispose of Antifreeze?
- How Do You Dispose of Needles?
- How Do You Dispose of a Smoke Detector?
- How Do You Dispose of Old Electronics?
- How Do You Dispose of a Vape?
- How Do You Dispose of a Helium Tank?
- How Do You Dispose of Bleach?
- How Do You Dispose of Paint Thinner?
- How Do You Dispose of Aerosol Cans?
- How Do You Dispose of a Mercury Thermometer?
- What Is RCRA?
Drinking water
- Is Tap Water Safe to Drink?
- Why Is There Chlorine in Tap Water?
- Is There Lead in Your Tap Water?
- What Is TDS in Water?
- What Should You Do During a Boil Water Advisory?
- What Is Legionella, and How Do People Get Legionnaires’ Disease?
- Is Hard Water Bad for You?
- What Is Atrazine?
- What Is a Lead Service Line?
- Is Well Water Safe to Drink?
- Is There Arsenic in Well Water?
- Why Is Fluoride in Drinking Water?
- Are Nitrates in Drinking Water Harmful?
- What Water Filter Removes Lead?
- What Does NSF Certified Mean?
- Is Rain Water Safe to Drink?
- What Is Polybutylene Pipe?
- Is PEX Pipe Safe for Drinking Water?
- Is Distilled Water Safe to Drink?
- What Is Chloramine in Water?
- What Is a Water Softener?
- What Is a Harmful Algal Bloom?
- What Is Red Tide?
- What Is the Brain-Eating Amoeba?
- What Do Coliform Bacteria in Water Mean?
- What Is Reverse Osmosis Water?
Skin, hair and personal care
- Is There Benzene in Sunscreen?
- Are There Phthalates in Fragrance?
- Is There Formaldehyde in Hair Products?
- What Does the FDA Say About Oxybenzone in Sunscreen?
- Are Parabens Bad for You?
- Is Nail Polish Toxic?
- Does Hair Dye Cause Cancer?
- Is Dry Shampoo Safe?
- Can Tampons Cause Toxic Shock Syndrome?
- Is Tattoo Ink Toxic?
- Is Spray Tanning Safe?
- Is Hydroquinone Banned?
- Does Aluminum in Deodorant Cause Cancer?
- Is Triclosan Banned?
- Is Avobenzone Safe?
- Are Gel Nails and UV Nail Lamps Safe?
- Is Coal Tar Shampoo Safe?
- Is Benzoyl Peroxide Safe?
- Is Talcum Powder Safe?
- What Is Kojic Acid?
- Is Teeth Whitening Safe?
- What Is Phenoxyethanol?
- Is Zinc Oxide Safe in Sunscreen?
- Is Octinoxate Safe?
- What Is Methylisothiazolinone?
- Is Homosalate Safe?
- What Is DMDM Hydantoin?
- What Is the Hair Relaxer Lawsuit About?
- What Is Selenium Sulfide?
- What Is Resorcinol?
- Is Black Henna Safe?
- Is Tea Tree Oil Toxic?
- What Is Sodium Lauryl Sulfate?
- What Is Cocamidopropyl Betaine?
- What Is a Nickel Allergy?
- What Is Chlorhexidine?
- What Is Sodium Laureth Sulfate?
- What Is Dimethicone?
- What Is Petrolatum?
- What Is Cetearyl Alcohol?
- What Is Benzyl Alcohol?
Cookware, containers and bottles
- Is There Lead in Stanley Cups?
- Is There BPA in Water Bottles?
- Is Ceramic Cookware Safe?
- Is Stainless Steel Cookware Safe?
- Is Cast Iron Cookware Safe?
- Are Air Fryers Toxic?
- Is Silicone Toxic?
- Is There Microplastic in Bottled Water?
- Is Aluminum Foil Toxic?
- Is It Safe to Microwave Plastic?
- Is Melamine Dinnerware Safe?
- Is Enameled Cast Iron Safe?
- Is Parchment Paper Toxic?
- Is Copper Cookware Safe?
- What Does BPA-Free Mean?
- Are Stainless Steel Water Bottles Safe?
- Is Aluminum Cookware Safe?
- Does Lead Crystal Leach Lead Into Drinks?
- Can You Microwave Styrofoam?
- Is Polypropylene Safe?
- What Do the Recycling Numbers on Plastic Mean?
Food, drink and additives
- Is There Lead in Protein Powder?
- Is There Lead in Chocolate?
- Do Tea Bags Release Microplastics?
- Is There Arsenic in Rice?
- How Much Mercury Is in Tuna?
- Is There Lead in Cinnamon?
- Is There Glyphosate in Food?
- Is Titanium Dioxide Allowed in Food?
- Is Red Dye 3 Banned?
- Are Artificial Food Dyes Being Banned?
- Is Aspartame Bad for You?
- Is Sucralose Bad for You?
- Is MSG Bad for You?
- Is Red 40 Bad for You?
- What Is Acrylamide, and Is It in Coffee?
- Is Potassium Bromate Banned?
- Is Bacon Bad for You?
- Is Blue 1 Dye Bad for You?
- Is Monk Fruit Sweetener Safe?
- Is Xylitol Safe?
- What Is Maltodextrin?
- Is Erythritol Bad for You?
- Is Yellow 5 Bad for You?
- What Is BHT, and Is It Safe in Food?
- Is Deli Meat Bad for You?
- Is Stevia Safe?
- Is Canola Oil Bad for You?
- What Is Carrageenan, and Is It Bad for You?
- What Are Sugar Alcohols?
- What Is Acesulfame Potassium?
- Is Alcohol a Carcinogen?
- What Is Sodium Benzoate?
- What Is BHA?
- What Is TBHQ?
- What Is Guar Gum?
- Is Allulose Safe?
- Is Smoked Meat Bad for You?
- Is Coffee Carcinogenic?
- Is Xanthan Gum Bad for You?
- Is Polysorbate 80 Safe?
- Is Soy Lecithin Bad for You?
- Is Saccharin Safe?
- What Is Azodicarbonamide?
- What Are the Symptoms of Botulism?
- What Is Ciguatera Poisoning?
- What Is Scombroid Poisoning?
- What Are Mycotoxins?
- What Is Tetrodotoxin?
- Is Raw Milk Dangerous?
- Why Does Wine Say Contains Sulfites?
- What Is Carmine?
- What Are the Symptoms of Food Poisoning?
- What Are the Symptoms of Salmonella?
- What Are the Symptoms of E. coli?
- What Are the Symptoms of Listeria?
- What Is Brominated Vegetable Oil?
- Is Palm Oil Bad for You?
- What Is Calcium Propionate?
- What Is 4-MEI?
- What Is Propyl Gallate?
- Is Potassium Sorbate Safe?
- Is Citric Acid Safe?
- Is Baking Soda Toxic?
- What Is Carboxymethylcellulose?
- Is Activated Charcoal Safe?
- What Is Sodium Aluminum Phosphate?
- How Do You Wash Pesticides Off Produce?
- What Happens If You Eat Mold?
- What Is Dextrose?
- What Are Natural Flavors?
- What Is a Death Cap Mushroom?
- Which Mushrooms Are Poisonous?
- Are Seed Oils Bad for You?
- What Is Annatto?
- What Is High Fructose Corn Syrup?
- What Is Sodium Phosphate?
- What Is Gum Arabic?
- What Is Modified Food Starch?
- Are Green Potatoes Poisonous?
- Is Cassava Poisonous?
- What Are the Symptoms of Norovirus?
- What Is Trichinosis?
- What Is Bacillus Cereus?
- What Is Anisakis?
- What Are the Symptoms of Campylobacter?
- What Is Staph Food Poisoning?
- What Is the Food Danger Zone?
- Can You Refreeze Meat?
- Do Apple Seeds Have Cyanide?
- Are Cherry Pits Poisonous?
- What Is Nutmeg Poisoning?
- What Is Paralytic Shellfish Poisoning?
- What Is Vibrio Vulnificus?
- What Are the Symptoms of Hepatitis A?
- What Are Oxalates?
- Can Dented Cans Cause Botulism?
- What Is Ergot?
- What Is Glycerin?
- What Is Calcium Chloride?
- What Is Silicon Dioxide?
- What Is Sorbitol?
- What Is Calcium Carbonate?
- What Is Sodium Citrate?
- What Is Maltitol?
- What Is Magnesium Stearate?
- What Is Mannitol?
- What Are Mono and Diglycerides?
- What Is Tricalcium Phosphate?
- What Is Sodium Metabisulfite?
- What Is Sodium Erythorbate?
- What Is Polysorbate 60?
- What Is Lactic Acid?
- What Is Ascorbic Acid?
- What Is Malic Acid?
- What Is Potassium Chloride?
Air and hazards at home
- Is There Flame Retardant in Furniture?
- Are Candles Bad for You?
- Is Dish Soap Toxic?
- Is There Formaldehyde in Clothing?
- Are Dryer Sheets Toxic?
- Are Mothballs Toxic?
- Is Burning Incense Bad for You?
- Is Black Mold Dangerous?
- Is DEET Safe?
- What Is Radon, and Should You Test Your Home?
- What Is Asbestos, and Is It in Popcorn Ceilings?
- How Do You Know If Your House Has Lead Paint?
- What Happens If You Mix Bleach and Ammonia or Vinegar?
- Is Permethrin Safe?
- What Are the Signs of a Gas Leak?
- Is Picaridin Safe?
- Is Borax Toxic?
- Is Hydrogen Peroxide Safe?
- What Is Creosote?
- Is Fiberglass Dangerous?
- Can Quartz Countertops Cause Silicosis?
- What Is PM2.5, and Why Does It Matter?
- Is Pressure-Treated Wood Safe?
- How Do You Treat a Chemical Burn?
- What Does Carbon Monoxide Smell Like?
- Why Does My House Smell Like Rotten Eggs?
- How Do You Put Out a Lithium Battery Fire?
- Is Ozone Bad for You?
- What Is Chlorine Gas?
- Is Ammonia Toxic?
- Does Vermiculite Insulation Contain Asbestos?
- What Is Thirdhand Smoke?
- What Are the Symptoms of a Propane Leak?
- Is It Safe to Use a Propane Heater Indoors?
- Is Refrigerant Toxic?
- Is Acetone Toxic?
- Is Super Glue Toxic?
- Is Butane Toxic?
- Is Drywall Dust Dangerous?
- What Is Sulfur Dioxide?
- Is Diatomaceous Earth Safe?
- Is Boric Acid Safe?
- What Is Cyanuric Acid?
- What Is Nitrogen Dioxide?
- What Does the Air Quality Index Mean?
- What Is Hantavirus?
- What Are the Symptoms of Smoke Inhalation?
- What Are VOCs?
- What Is Sick Building Syndrome?
- Are Air Fresheners Bad for You?
- What Is Mesothelioma?
- What Is Radon Mitigation?
- What Is Low-VOC Paint?
- What Is the White Dust From a Humidifier?
- What Is Vog?
- Are Bug Bombs Safe?
- Is Rubber Mulch Safe?
- Is Artificial Turf Toxic?
- Is Mattress Off-Gassing Harmful?
- Is Mold in an Air Conditioner Dangerous?
- Is Rubbing Alcohol Toxic?
- What Are Isocyanates?
- What Is Black Carbon?
- How Do You Test for Asbestos?
- Do Old Floor Tiles Contain Asbestos?
- Does Popcorn Ceiling Have Asbestos?
- Why Is My Carbon Monoxide Detector Beeping?
- How Do You Test for Mold?
- Is Vaping Worse Than Smoking?
- What Is Hot Tub Rash?
- How Do You Test for Radon?
- Why Is My Smoke Detector Beeping?
- What Is Swimmer's Itch?
- Is Rat Poison Dangerous to Humans?
- What Is the Difference Between Mold and Mildew?
- How Do You Get Rid of Black Mold in the Shower?
- What Is the Pink Mold in My Shower?
- What Should You Do About Mold on Walls?
- What Is a Poison Ivy Rash?
- What Is Poison Oak?
- What Does a Brown Recluse Bite Do?
- What Are the Symptoms of a Black Widow Bite?
- What Is Jimsonweed?
- What Is Water Hemlock?
- What Is a MERV Rating?
- Do Air Purifiers Work?
- What Is a HEPA Filter?
- How Do You Know If You Are Allergic to Bee Stings?
- How Do You Treat a Jellyfish Sting?
- Is Lily of the Valley Poisonous?
- Is Foxglove Poisonous?
- Does Bleach Kill Mold?
- Does Vinegar Kill Mold?
- Is a Gasoline Smell in the House Dangerous?
- Are Rhubarb Leaves Poisonous?
- Is Silica Gel Toxic?
- Is Dry Ice Dangerous?
- Why Does My House Smell Like Burning Plastic?
- Is Oleander Poisonous?
- What Are the Symptoms of a Scorpion Sting?
- What Does Mold Smell Like?
- Is Laundry Detergent Toxic?
- Can Wet Cement Burn Your Skin?
- What Is Natural Gas?
- What Are the Symptoms of a Mold Allergy?
Chemicals and metals, A to Z
- Is There BPA in Receipts?
- What Are Endocrine Disruptors?
- Do Heavy Metal Detox Products Work?
- What Is Cadmium, and How Are You Exposed to It?
- What Is Toluene, and Is It Harmful?
- What Is Xylene, and Is It Harmful?
- What Are the Symptoms of Arsenic Poisoning?
- What Is Ethylene Oxide, and How Are People Exposed?
- What Is Vinyl Chloride, and Is It Dangerous?
- Is Chlorpyrifos Banned in the US?
- What Is 6PPD, and Why Does It Matter for Salmon?
- What Is Hexavalent Chromium?
- What Are PCBs?
- What Is DDT, and Why Was It Banned?
- What Is Benzene, and How Are People Exposed?
- Are There Microplastics in the Brain?
- What Is Lead Poisoning, and How Do Adults Get It?
- What Are the Symptoms of Mercury Poisoning?
- What Is Cyanide, and Are Apple Seeds Poisonous?
- What Is Methanol Poisoning?
- What Is Lye?
- What Is Popcorn Lung?
- What Is Dioxin?
- What Is Paraquat?
- What Are Mineral Spirits?
- What Is Muriatic Acid?
- What Is Sulfuric Acid?
- What Is Hydrofluoric Acid?
- What Are PAHs?
- What Is Propylene Glycol?
- What Happens in Ethylene Glycol Poisoning?
- What Is Beryllium?
- What Is Styrene?
- What Is the Roundup Lawsuit About?
- What Is Perchloroethylene (PCE)?
- What Is Methylene Chloride?
- What Is Trichloroethylene (TCE)?
- What Is Formaldehyde?
- What Are Nanoplastics?
- What Is Organophosphate Poisoning?
- What Are the Symptoms of Pesticide Exposure?
- What Is Carbon Tetrachloride?
- What Are Neonicotinoids?
- What Is Malathion?
- Is There Cadmium in Jewelry?
- What Is Silica?
- What Is Fly Ash?
- What Is Ethanol?
- Is Aluminum Toxic?
- Is PVC Toxic?
- What Is Ammonium Nitrate?
- What Are Whippets?
- What Is Hydrogen Sulfide?
- What Is Mustard Gas?
- What Is Ricin?
- What Is Tear Gas?
- What Is Sarin?
- What Is a Carcinogen?
- What Do Hazmat Placards Mean?
- What Is LD50?
- What Is a Safety Data Sheet?
- What Is Hypochlorous Acid?
- What Is Methane?
- What Do GHS Pictograms Mean?
- What Is Kerosene?
- What Is Chloroform?
- What Is a Neurotoxin?
- What Is Sodium Hypochlorite?
- What Are Heavy Metals?
- What Is Phosphoric Acid?
- What Is Trisodium Phosphate?
- What Is Benzalkonium Chloride?
- What Is Sodium Percarbonate?
- What Is Naphtha?
- What Is Hexane?
- What Is Antimony?
- What Does a Prop 65 Warning Mean?
- What Is Acute Radiation Syndrome?
- What Is Uranium?
- What Is a Superfund Site?
- What Is Lithium?
- What Is Chromium?
- What Is Copper Toxicity?
- What Is Selenium Toxicity?
- What Is Cobalt?
- What Is Zinc Toxicity?
- What Is DEHP?
- What Is Calcium Hypochlorite?
- What Is Copper Sulfate?
- What Is Thallium?
- What Is Tritium?
- What Is Cesium-137?
- What Is Strychnine?
- What Is Bromine?
- What Is Barium?
- What Is Acetic Acid?
- What Is Chlorine Dioxide?
- What Is Nitric Acid?
- What Is Potassium Hydroxide?
- What Is Hydrogen Chloride?
- What Is TSCA?
- What Is Radiation?
- What Is Tin?
- What Is Tungsten?
- What Is Manganese?
- What Is Radium?
- What Is Plutonium?
- What Is Bismuth?
- What Is Molybdenum?
- What Is Vanadium?
- What Is DMSO?
- What Is Turpentine?