Ant control for rentals and businesses

Ants are an ordinary nuisance in a family home. In a rental they raise the question of who's responsible, and in a business they can become a hygiene issue with customers watching. The ants behave the same way; what changes is who pays and how fast it has to be sorted.

Rentals: who is responsible

Tenancy Services sets out the general rules for pests in rental homes. Its guidance covers pests in general rather than ants specifically:

• At the start of a tenancy the landlord is responsible for the property being free of pests.
• If the tenant's lack of cleanliness causes an infestation, the landlord can apply to the Tenancy Tribunal, which may order the tenant to pay.
• If the landlord's failure to maintain the property causes it, for example gaps or leaks that let pests in, the tenant can give the landlord a notice to remedy.
• If neither side clearly caused it, responsibility is less clear, and Tenancy Services notes the cost is often shared.

Ants are a particular grey area, because Argentine ants arrive from neighbouring sections regardless of how clean a house is. A report from a pest controller saying which species it is and where it comes from helps both sides agree.

For landlords and property managers

• Book a treatment between tenancies if there's any sign of ants, especially in late spring, before the summer peak.
• Keep the invoice and the technician's notes with the property file.
• When a tenant reports ants, respond promptly and arrange an inspection. Early treatment is cheaper than a summer-long problem.
• In a body corporate or block of units, raise it with the committee or manager. Treating one unit at a time rarely holds.

For tenants

• Tell the landlord or property manager in writing the moment you notice a problem, with photos and dates.
• Keep food sealed and benches clear; it helps the treatment and shows good faith.
• Don't block access for the technician, and follow the aftercare instructions.

Businesses and food premises

Cafés, restaurants, food trucks, early childhood centres and shops all get ants, often from the same neighbouring colonies as the houses around them. The difference is that customers notice and the problem has to be dealt with quickly and documented.

• Food premises should follow their food control plan or national programme, which expects pests to be kept out and action recorded. Keep the pest controller's report with your records.
• Treatment timing can usually be arranged outside trading hours.
• Product choice matters more in food areas; baits are placed in closed stations or in cracks away from food contact surfaces.
• Regular service may make sense for premises that see ants every summer.

For large sites or multi-site contracts, ask for a site visit and written proposal rather than a phone quote.

Checked 27 October 2026