Does Baking Soda Kill Ants: It’s Trickier than You Think

Ant infestations can be a nuisance for homeowners, as they can invade homes, gardens, and other areas in search of food and shelter. Baking soda is a commonly discussed home remedy for killing ants, but getting them to ingest it can be challenging. This comprehensive guide will explain the science behind using baking soda to eliminate ants, provide methods to encourage ants to consume the substance, and discuss additional strategies for ant control.

The Science Behind Baking Soda and Ants

A. How Baking Soda Kills Ants

  • Effect on ants’ digestive system: Baking soda, or sodium bicarbonate, reacts with the acidic substances in ants’ digestive systems. This reaction produces carbon dioxide gas as a byproduct.
  • The release of gas and internal damage: Ants are unable to expel gas, which causes a buildup of pressure in their bodies. This pressure eventually leads to internal damage and death.

B. Why Ants Do Not Readily Ingest Baking Soda

  • Ants’ natural aversion to certain substances: Ants are typically repelled by substances that do not provide them with nutritional benefits. They may avoid consuming baking soda because it does not offer any food value.
  • The role of ant scouts in identifying food sources: Ant scouts search for food and bring samples back to their colonies. The colony uses chemical signals to determine if the food source is beneficial, and baking soda may not pass this test.

Methods to Encourage Ants to Ingest Baking Soda

A. Baking Soda and Sugar Bait

  • Creating the mixture: Combine equal parts baking soda and powdered sugar. This combination provides a sweet attraction for the ants while also delivering the lethal baking soda.
  • Placement and monitoring of bait: Place the bait near ant trails or areas where ants have been observed. Check the bait regularly and replace it as needed.

B. Baking Soda and Honey Or Syrup

  • Preparing the bait: Mix equal parts baking soda and honey or syrup to create a sticky, sweet substance. This combination offers ants an irresistible sugary treat that also contains baking soda.
  • Tips for successful baiting: Apply the bait to small pieces of cardboard or another disposable material. Place the bait in areas frequented by ants, such as near their trails or nests.

C. Baking Soda and Protein-Based Bait

  • Suitable protein sources: Some ants prefer protein-rich food sources, such as peanut butter or wet pet food. Test different protein sources to determine which is most attractive to the ants in your area.
  • Mixing and placement of bait: Combine equal parts baking soda and the chosen protein source. Place the bait in areas where ants have been observed foraging for food.

Additional Strategies for Ant Control

A. Natural Remedies

  • Diatomaceous earth: A natural powder made from the fossilized remains of tiny aquatic organisms called diatoms. Kills ants by damaging their exoskeletons and causing dehydration.
  • Boric acid: A naturally occurring compound that is toxic to ants when ingested. Can be mixed with sweet or protein-based baits to create an effective ant killer.
  • Essential oils: Some essential oils, such as peppermint or eucalyptus, can repel ants due to their strong smell. Spray diluted essential oils around entry points and ant trails to deter ants.

B. Chemical Pesticides

  • Ant baits: Commercially available ant baits contain insecticides that ants carry back to their colonies, effectively killing the entire colony. Follow the manufacturer’s instructions for proper placement and use.
  • Spray insecticides: Aerosol or liquid insecticides can be used to target ants directly, but may not provide long-term control. Use as directed and consider the potential impact on non-target insects and the environment.

C. Preventive Measures

  • Proper food storage: Store food in airtight containers to prevent ants from accessing it. Clean up spills and crumbs promptly to eliminate food sources for ants.
  • Sealing entry points: Inspect your home for gaps or cracks where ants may enter and seal them with caulk or other appropriate materials. Focus on areas around windows, doors, and utility lines.
  • Maintaining a clean environment: Regularly clean countertops, floors, and appliances to remove potential food sources. Also, eliminate standing water and fix leaks to remove water sources for ants.

Safety Considerations for Ant Control

A. Keeping Children and Pets Safe

  • Proper placement of baits: Place ant baits in areas that are inaccessible to children and pets to prevent accidental ingestion. Consider using tamper-resistant bait stations for added safety.
  • Avoiding toxic substances: Choose ant control methods that are safe for use around children and pets. Opt for natural remedies or low-toxicity pesticides when possible.

B. Environmental Concerns

  • Selecting eco-friendly ant control methods: Consider the environmental impact of ant control methods and choose options that have minimal negative effects on non-target organisms and the ecosystem.
  • Responsible disposal of ant baits and pesticides: Dispose of used ant baits and empty pesticide containers according to local regulations to minimize environmental contamination.


Baking soda can effectively kill ants, but getting them to ingest it is the tricky part. By combining baking soda with attractive food sources, such as sugar or protein-based baits, you can increase the likelihood of ants consuming the lethal substance. Additionally, incorporating other ant control strategies and preventive measures can help manage ant infestations more effectively. Always prioritize safety and environmental considerations when selecting and using ant control methods.


  • Nathan Collins

    Having spent years working in the landscaping industry, Nathan Collins has cultivated a wealth of knowledge about the natural world. He is committed to helping others appreciate the beauty in their backyards, whether it's through identifying rare rocks and minerals or crafting the perfect landscape.

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