Ants in Commercial Kitchen? What to Do About Infestations

July 24th, 2026

Last updated: July 10th, 2026

Finding ants in commercial kitchen environments is something no business wants to deal with. Even a small trail of ants can quickly become a much larger problem if left untreated, particularly in busy food preparation areas where there is a constant supply of food and warmth.

Whether you run a restaurant, café, hotel, care home or catering business, acting quickly is essential. As well as posing hygiene concerns, ants can damage a business’s reputation and may raise issues during food hygiene inspections.

The good news is that early action and good housekeeping can often prevent a small pest problem from becoming a serious infestation.

Why Are Ants Attracted to Commercial Kitchens?

Commercial kitchens offer almost everything ants need to survive.

Food spills, crumbs, sugary drinks, grease, and even tiny amounts of moisture can attract foraging ants. Once a worker ant discovers a food source, it leaves a scent trail that allows the rest of the colony to follow.

This is why a single ant is rarely just a single ant. If one has found its way into the kitchen, others are often close behind.

Entry points can be surprisingly small. Ants regularly enter through cracks around doors or in the flooring or pipework.

Signs You May Have Ants

The most obvious sign is seeing ants moving around food preparation or storage areas. They often travel in clear trails between their nest and a food source.

Other signs include:

• Small groups of ants near sinks or drains
• Ants around food storage shelves
• Activity near rubbish bins
• Soil or debris around cracks where ants are nesting
• Regular sightings in the same location

The earlier these signs are spotted, the easier the problem is usually to resolve.

What Should You Do If You Find Ants?

The first priority is to prevent food contamination.

If ants have reached food preparation areas or open food, any affected products should be removed immediately. Food that has been contaminated should not be served or used.

Next, identify where the ants are coming from if possible. Cleaning away visible ants without addressing the source is unlikely to solve the problem, as more will often return.

Staff should also avoid using household insect sprays in food preparation areas unless they are specifically approved for commercial food environments. Incorrect use of chemicals can create additional food safety risks.

Check Food Storage Carefully

Once ants have been discovered, it is worth inspecting all nearby food storage.

Dry goods such as flour, sugar, cereals, baking ingredients and snacks are common targets because they are easily accessible.

Look for:

• Open packaging
• Damaged containers
• Food debris on shelving
• Spilled ingredients
• Signs of ants inside storage cupboards

Any food that appears contaminated should be disposed of safely.

Storing ingredients in sealed containers rather than opened packaging can make kitchens far less attractive to ants.

What About Fridges and Freezers?

Cold temperatures mean ants are unlikely to establish themselves inside a properly functioning commercial fridge or freezer. Yet they may still be found around the outside of refrigeration equipment if food debris or spillages are present.

When dealing with an ant problem, it is sensible to:

• Clean underneath and behind refrigeration units
• Remove food residues from door seals
• Check that doors close properly
• Inspect surrounding walls and floors for entry points
• Remove any waste in a timely and safe way

Routine cleaning around refrigeration equipment often uncovers crumbs or spills that are hidden during normal day-to-day operations.

Improve Cleaning and Housekeeping

Good housekeeping remains one of the best ways to discourage ants.

Particular attention should be paid to:

• Cleaning food preparation surfaces thoroughly
• Sweeping and mopping floors regularly
• Checking areas like ductwork and pipes
• Emptying bins frequently
• Cleaning under heavy kitchen equipment
• Removing standing water where possible

Even small amounts of food left overnight can attract ants.

Waste storage areas should also be kept clean and bins should have secure lids to reduce the attraction for pests.

Prevent Future Infestations

Once ants have been removed, preventing them from returning is just as important.

Simple preventative measures include sealing gaps around doors, pipes and windows, repairing damaged brickwork where necessary, and ensuring external doors are not left open unnecessarily.

Regular building inspections can help identify potential entry points before they become a larger problem.

Staff awareness also plays an important role. Encouraging employees to report pest sightings immediately allows action to be taken before colonies become established.

Trust Robinsons Facilities Services and work with experienced, highly accredited and professional pest control technicians to deal with all your commercial pest control requirements.

Call us now at 01423 226578 →