Pest Control for Food Businesses During Summer: Flies, Wasps, Rodents and Hygiene Risks

Summer can increase pest pressure for food businesses 

For food businesses, summer can be one of the most challenging times of year for pest control.

Warmer weather, open doors, outdoor seating, higher footfall, food deliveries, waste storage and increased food preparation can all raise the risk of pest activity. Flies, wasps, rats, mice, ants, cockroaches and stored product insects may become more noticeable, particularly where food waste, spillages or structural gaps give pests easy access.

For restaurants, cafés, pubs, takeaways, bakeries, care homes, schools, hotels and commercial kitchens, pest control is not just about comfort. It is closely linked to food safety, staff confidence, customer trust and legal compliance.

At Stratton Pest Control, we support food businesses across Hertfordshire, Bedfordshire, Buckinghamshire, Essex, Cambridgeshire, North London and surrounding areas with discreet, professional pest control services.

This guide explains the main summer pest risks for food businesses and the steps you can take to reduce them.

Why food businesses are more vulnerable in summer 

Food businesses can attract pests throughout the year, but summer often increases the risk because:

• Food waste decomposes more quickly

• Doors and windows are opened more often

• Outdoor dining areas create extra food and drink residue

• Deliveries may increase

• Bins and waste stores can become warmer and smellier

• Staff may be busier and less able to spot early warning signs

• Flying insects are more active

• Rodents may be attracted to external food waste areas

Small issues can become larger problems quickly. A few flies around a bin store, a wasp problem near outside tables or signs of mice in a stockroom should not be ignored.

Flies in food premises 

Flies are one of the most common summer pest issues for food businesses. They are attracted to food, moisture, waste, drains and organic matter. Once inside, they can move between waste areas, food preparation zones, surfaces and customer spaces.

Common fly risk areas include:

• Bin stores

• Food waste caddies

• Kitchen drains

• Mops and cleaning equipment

• Bar areas

• Cellars

• Outdoor dining spaces

• Food preparation areas

• Delivery entrances

• Damaged or poorly fitting doors and windows

Prevention should focus on reducing access, removing attractants and improving monitoring.

Practical steps include:

• Keep doors closed where possible

• Fit and maintain suitable fly screens

• Clean drains and wet areas regularly

• Empty food waste frequently

• Keep bin lids closed

• Clean spillages immediately

• Store mops and cleaning equipment so they can dry properly

• Review the position and suitability of electric fly killers

• Keep food covered when not being prepared or served

• Record fly sightings and identify hotspots

If flies are appearing regularly inside a food business, the source needs to be found. Killing individual flies will not solve the problem if breeding sites or access points remain.

Wasps around outdoor seating and customer areas

Wasps can cause serious disruption to food businesses in summer, especially those with outdoor seating, beer gardens, takeaway windows, market stalls or open-front premises.

They are often attracted to:

• Soft drinks

• Fruit juices

• Beer and cider residue

• Ice cream

• Desserts

• Jam, syrups and sauces

• Food waste

• Open bins

• Sticky tables and floors

Wasps can unsettle customers and staff, and the risk of stings can be particularly concerning for people with allergies.

To reduce wasp activity:

• Clear outdoor tables quickly

• Wipe sticky surfaces frequently

• Keep bins away from customer areas

• Use bins with close-fitting lids

• Rinse bottles and cans before recycling where practical

• Keep sugary ingredients sealed

• Check wall cavities, rooflines, sheds and outbuildings for nest activity

• Do not allow staff to disturb suspected wasp nests

If wasps are repeatedly flying in and out of one point, there may be a nest nearby.

Professional treatment is strongly recommended, as disturbing a nest can be dangerous.

Rats and mice near food businesses

Rodents are a significant concern for food businesses because they can contaminate food, damage stock, gnaw packaging and affect hygiene standards.

Summer rodent activity may be linked to external waste, food deliveries, bin stores, neighbouring properties, drains, yards and structural gaps. Even if rodents are first seen outside, they may soon find routes into kitchens, cellars, stores or ceiling voids.

Signs of rats or mice include:

• Droppings

• Gnaw marks

• Scratching noises

• Greasy smear marks

• Damaged packaging

• Unusual smells

• Burrows near external walls or bin areas

• Footprints in dusty areas

• Stock damage

Food businesses should pay particular attention to back-of-house areas, including dry stores, staff rooms, basements, service yards, bin stores and delivery points.

Prevention steps include:

• Keep external waste areas clean and secure

• Do not leave food waste bags on the ground

• Store ingredients in sealed containers

• Check incoming deliveries for signs of pest damage

• Seal gaps around pipes, doors, vents and utility entry points

• Fit bristle strips or door seals where needed

• Keep vegetation cut back from the building

• Maintain a clear cleaning schedule

• Report and record all signs of pest activity

A professional pest control contract can help food businesses detect rodent activity early, identify entry points and maintain appropriate monitoring.

Ants, stored product insects and other summer pests 

Although flies, wasps and rodents are often the biggest summer concerns, they are not the only pests food businesses may face.

Ants can be attracted to sugar, syrups, crumbs and drink residue. Stored product insects may affect dry goods such as flour, cereals, grains, nuts, seeds or dried fruit. Cockroaches can also be a serious concern in warm, food-rich environments, especially where there are hidden harbourage areas.

Good stock management is essential.

Food businesses should:

• Rotate stock carefully

• Check packaging before storing goods

• Keep dry goods sealed

• Clean shelving and storage areas regularly

• Avoid leaving crumbs or spillages overnight

• Inspect hard-to-reach areas

• Keep records of pest sightings

• Train staff to report early signs

The earlier a pest issue is identified, the easier it is to control.

Why DIY pest control is risky in food businesses

DIY sprays, traps or foggers may seem like a quick solution, but they can create problems in commercial food settings.

Risks include:

• Contaminating food preparation areas

• Using unsuitable products

• Missing the source of the infestation

• Scattering pests into other parts of the building

• Failing to identify access points

• Failing to keep suitable records

• Creating a false sense of control

Food businesses need pest control that is safe, appropriate and properly documented. A professional pest control provider can assess the site, identify the species, locate harbourage areas, recommend proofing measures and provide treatment records where needed.

Summer pest control checklist for food businesses

Use this checklist to reduce pest risk during warmer months:

• Keep doors and windows closed where possible

• Fit suitable fly screens where ventilation is needed

• Keep food waste sealed and remove it frequently

• Clean bin stores and waste areas regularly

• Never leave bin bags beside bins

• Clean drains, wet areas and spillages promptly

• Store ingredients in sealed containers

• Check deliveries for signs of pest activity

• Keep outdoor dining areas clean

• Clear tables quickly

• Move bins away from doors and customer areas where possible

• Seal gaps around pipes, doors and walls

• Keep vegetation away from the building

• Record pest sightings

• Train staff to report concerns

• Arrange regular professional pest inspections

The value of a professional pest control contract

For many food businesses, a planned pest control contract or Integrated Pest Management Plan is the most effective way to stay ahead of seasonal issues.

A professional pest control contract can include:

• Routine inspections

• Monitoring points

• Rodent control and proofing advice

• Fly control recommendations

• Wasp nest advice and treatment

• Written reports

• Trend analysis

• Hygiene and housekeeping recommendations

• Support before inspections or audits

• Emergency callouts where required

The aim is not only to respond when a pest appears. The aim is to reduce risk, detect problems early and protect your business, customers and staff.

Professional pest control for food businesses

Stratton Pest Control provides discreet, professional pest control services for food businesses across Hertfordshire, Bedfordshire, Buckinghamshire, Essex, Cambridgeshire, North London and surrounding counties.

We work with restaurants, cafés, pubs, takeaways, commercial kitchens, food retailers, offices, schools, care settings and other commercial premises.

Whether you are dealing with flies in a kitchen, wasps near outdoor seating, rodents around a bin store or recurring pest activity that needs investigation, our team can help.

If you run a restaurant, café, pub, takeaway, commercial kitchen or catering business, a proactive approach can help reduce pest risk before problems disrupt service.

Stratton Pest Control provides tailored Integrated Pest Management plans for hospitality and catering businesses, with discreet inspections, monitoring, proofing advice and clear reporting to support due diligence and inspection readiness. Learn more about our specialist pest control for hospitality and catering businesses⁠.