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Ant Control in London — Same-Day, 24/7

Pest Control Service Group treats ant infestations in London homes, kitchens and businesses, 24/7. Trails of ants usually lead back to a nest outside or inside a wall. Call 020 7101 4957 for a same-day visit, a free inspection to find the nest, and targeted treatment backed by our guarantee.

  • ✓ Same-day callout
  • ✓ Free inspection
  • ✓ Service guarantee
  • ✓ RSPH Level 2 technicians

Last updated: 12 October 2026 · Reviewed by: M. Hanifi, RSPH Level 2 qualified technician

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Signs you have ants

The main sign of ants is a trail of small ants moving between a food source and a gap in the floor, wall or door frame.

  • Lines of ants across worktops, floors or window sills.
  • Small piles of soil or sand near paving, skirting or brickwork.
  • Flying ants appearing in large numbers on warm summer days.
  • Tiny pale ants (Pharaoh ants) in heated buildings, hospitals or flats.
Image slot: technician-placing-ant-bait-along-kitchen-skirting.webp — replace with a real job photo.

Why ants are a problem

Garden ants are mostly a nuisance, but Pharaoh ants in heated buildings can spread bacteria and are hard to control without professional treatment.

  • Ants contaminate food and preparation surfaces.
  • Pharaoh ants spread through buildings and split into new colonies when sprayed.
  • Large nests under paving can undermine patios.

Why does spraying ants make them worse?

Sprays kill the ants you see but not the queen; with Pharaoh ants, spraying can cause the colony to split into several new nests.

Professional gel baits are carried back to the nest and shared, killing the colony at the source.

How we get rid of ants: our process

Our process is simple: you call, we visit the same day, inspect for free, treat, proof and follow up until the problem is gone.

  1. Call us or send the form — any time, day or night.
  2. Same-day visit: we're on site within 2 hours on average.
  3. FREE inspection to find the source and scale of the problem.
  4. Targeted treatment using professional products.
  5. Proofing entry points where needed.
  6. Follow-up visit(s) to make sure the problem is gone.
  7. Covered by our service guarantee.

Treatment methods and safety for children and pets

  • Inspection to trace trails and identify the species.
  • Professional gel baits placed along trails.
  • Targeted residual treatment at entry points and nests.
  • Sealing entry gaps where needed.

Is it safe for children and pets? Gel baits are placed in cracks out of reach of children and pets.

How to prepare for ants treatment

Good preparation makes treatment work faster. Print this checklist and tick off each step before we arrive.

  1. Clear access to the areas where you have seen activity.
  2. Keep children and pets away from the area on the day of treatment.
  3. Do not use shop-bought sprays before the visit; they can make the problem harder to find.
  4. Wipe up food spills and store sugary food in sealed containers.

How long does ants treatment take?

A typical visit takes under an hour. Garden ants usually clear within a week; Pharaoh ants can take several visits over 4–8 weeks.

How much does ant control cost in London?

Ant Control starts from £180 + VAT. The final price depends on:

  • Species
  • Number of nests
  • Size of the property
  • Number of visits

We use the most effective professional products, which can cost a little more, but we believe you'll be happy with the quote. See our pricing guide or call 020 7101 4957.

Our guarantee

Our treatments are guaranteed for between 3 and 12 months, depending on the pest and the property. We confirm exactly what is covered, and for how long, when we inspect the site. Read the full terms on our guarantee page. Every job starts with a free inspection.

Residential and commercial ants control

Homes and rentals

Most home ant problems are garden black ants coming indoors in spring and summer.

Businesses

Pharaoh ants in hospitals, hotels and blocks of flats need a co-ordinated, building-wide programme. Commercial pest control · Landlords and HMOs

Areas we cover for ant control

Ant Control is available same-day across London and beyond, including:

“Amazing service, very professional and reliable. The technician was very friendly, I was offered an appointment the next day. Would definitely recommend them for any pest issue.”
10/10Checkatrade review · Bed bugs · NW4 · Oct 2024
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“Had a problem with a Glis Glis. Never had pest control out before but found PCSG on here and gave them a call. It's a Saturday and this company came within a few hours! … He is professional, friendly, so so helpful and kind.”
10/10Checkatrade review · Pest removal · SL9 · Aug 2024
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“Great job with a professional team! … will use your services again I'm sure.”
10/10Checkatrade review · Pest control · RG31 · Jul 2024
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Ant Control FAQs

How long does ant treatment take to work?

Garden ants usually stop within a few days to a week, as bait reaches the queen.

Are ants harmful?

Garden ants are mostly a nuisance. Pharaoh ants can spread bacteria in hospitals and food premises.

Why are there flying ants?

Flying ants are the mating swarm of a nearby nest, usually on warm, humid summer days. They only last a few days.

Can I just spray ants?

Spraying kills visible ants but not the nest, and can make Pharaoh ants spread. Baiting works better.

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