+85229546888 Call us Request a callback

Ant pest control

With over 55 years of experience in professional ant control, Rentokil Hong Kong can help you eliminate these troublesome pests from your home or business. Ants are incredibly capable and intelligent creatures. Though harmless, they can be a nuisance when they get into your home or business premises. Their complex and cooperative societies allow them to survive and thrive in conditions that would be otherwise challenging to us. 

Found traces of pests? You need the advice of a professional pest exterminator company. In addition to ants, Rentokil provides all-in-one pest control services for various common pests in Hong Kong including rats and mice, bed bugs, termites, cockroaches, etc.

Contact Us

Download this report

Ant inspection and identification

Technicians will inspect problem areas, following ant trails to locate nesting sites and determine where ants are entering and feeding. During the inspection, your Rentokil expert will identify the ant species and its feeding habits. This will inform the baiting method chosen (e.g. the use of sugar or protein based baits).

Ant baiting

Baits are particularly useful in controlling some species of ant. It is a relatively slow procedure so may require perseverance - but it is effective. Ant baits are a mixture of insecticide and food items such as sugar, designed to attract pests. Baits work well where the ant nest is inaccessible for treating with other chemicals and can kill an entire colony when worker ants find the bait and carry small quantities back to their nest where they feed it to the Queen, brood and other worker ants.

Ant insecticide spray

Insecticide treatments may be applied through spray to nesting sites, areas of ant access and travel such as paths, skirting boards, window sills, cupboards, cracks and crevices. Insecticides can also be used for treating nests located in enclosed spaces with sites of activity, or as a barrier method around the property.

Your local ant control professionals

All Rentokil technicians are highly qualified and trained to industry standards. Rentokil Hong Kong fulfills the global standards and was awarded the ISO Certifications by BSI - ISO 9001, ISO 14001, and ISO 45001. Our local teams offer a wide range of global innovations and termite control solutions for the most effective outcome.

Ant control expertise
Protecting commercial and residential properties in Hong Kong from ant damage for over 55 years
Trust the experts
Member of Pest Control Personnel Association of Hong Kong (PCPA). Experienced local technicians
Safe, effective solutions
A broad range of ant management options to suit your business or home needs

Find your nearest branch

Ant Pest Control Q&A

How much does ant control cost?

Your ant control costs will ultimately reflect the time and effort it will take to manage them in your home or business. The first step in determining the cost of ant control is fully understanding the problem. Why do ants suddenly appear? What causes ants in the room? What stops ants from coming into the house?

To answer all the above questions, Rentokil will need to visit your property to inspect for ants. Following this, the below factors will determine the most suitable ant treatment and its associated costs.

Size of premises

The larger the property, the more time required to successfully locate and treat the ant problem. This will have an effect on the cost of the treatment.

Type of treatment

The treatment required to address the ant infestation will relate to the overall costs of the service. There may be a need to combine ant control treatments methods and use them in conjunction with each other, whilst at other times one method may suffice.

Number of treatments

Sometimes ant management requires multiple treatments for successful control. This can be reflected with the pricing of the ant control service.

The severity of ant infestation

The size and extent of the ant infestation in your home or business affect the costs of the ant treatment service. Problem ants are often perceived as those that have established residence within a property. They are commonly soldier ants on a mission to return to their nest with food supply.

How can I tell if I have an ant infestation?

  • Ant trails: Keep an eye out for ant trails entering and exiting your home, as ants often travel along well-defined trails.
  • Nests: Some species of ants build visible nests, such as ant hills in your yard, or wall or crawl space colonies.
  • Sawdust piles: Carpenter ants, which can cause structural damage to your home, form sawdust-like piles when drilling holes in wood, and make rustling noises as they move through wood.  Find out more about Carpenter ants and other ant species.
  • Damaged wood: If you notice damage to your wood, such as hollow wood or small holes in the wood, this may indicate a carpenter ant infestation.
  • Feces: Ants leave feces. This can look like a small pile of dirt or sand.

Find out more about ant infestation signs.


How long does it take to get rid of ant infestation?

How long it takes to get rid of an ant infestation depends on several factors, including: Size of infestation, ant species, and methods used to control it. It generally takes days or weeks to completely eliminate an ant infestation. Here are some factors that may affect the timeline for eradicating the ant infestation.

  • Ant Species: Different ant species require different control strategies and may respond differently to treatment. For example, some species of ants are attracted to sweet foods, while others prefer protein-based foods.
  • Infestation Size: The larger the infestation, the longer it may take to disinfect. Ants reproduce quickly, and large colonies may have multiple nests or satellite colonies.
  • Treatment method: The treatment method used can also affect the timeline for eliminating an ant infestation. For example, baits may take longer to take effect than insecticides or sprays, but are often more effective at killing entire colonies.

It is also important to note that it can be difficult to completely eliminate ant infestations, especially if the colony is located in a difficult-to-access area. In some cases, ongoing prevention and professional pest control measures may be necessary to keep the ants from returning. If you have trouble getting rid of the ant infestation, contact a pest control company.


Do ants come back after extermination?

Ants may return after eradication, especially if the source of infection is not properly identified and treated. Here are some reasons why exterminated ants come back:

  • Incomplete Treatment: If ants in the colony are not exposed to the treatment, the colony may reorganize and continue to thrive.
  • Re-infestation: If entry points are not sealed or other sources of food and water are not addressed, new ants can enter your home and start new colonies.
  • Leftover Eggs: Some species of ants lay eggs that may not be affected by treatment, and these eggs can hatch and lead to new invasions.
  • New Colonies: Even if the original colony is removed, new colonies can form nearby and cause new invasions.

To prevent ants from returning after eradication, it is important to identify and treat the source of entry, seal the entry point, and eliminate sources of food and water that may attract ants. Regular cleaning and grooming will also help prevent recurrence. If the ant problem persists after eradication, contact an exterminator for assistance.

Related articles

Common ant species in Hong Kong

There are many different types of ant species, and here are some you are more likely to find in Hong Kong

Signs of an ant invasion

Are there any signs of an ant invasion? Let our experts help you find the signs of common ants

How to prevent ants

There are some steps you can take to ensure the ant army won’t invade you home

Find your nearest branch

About Rentokil

Our mission is to protect people and enhance lives. We do that by creating groundbreaking pest control innovations, by making our service solutions more sustainable and by making a positive impact in communities where we live and work.