Ants entering a home or business in Lyon should first be observed: note their routes, the rooms affected and accessible food or moisture. Seeing workers indoors does not identify the species or locate a nest. This guide helps you prepare useful information. Service availability at your address must be confirmed when you contact us.
Information to prepare
- Your town, property type and affected rooms.
- When you first noticed ants and when activity is visible.
- Clear photographs of the insects and their routes. Colour alone is not enough to identify a species.
- Accessible entry points, exposed food and signs of moisture.
- The names of any products already used and their application dates.
Our French guides cover flying ants indoors and ants in the kitchen.
Start with prevention
Clean up food residues, close food containers and maintain bins. Look for leaks and arrange repairs to moisture problems. Check accessible openings around pipes and joinery. These measures reduce possible resources and entry routes; they do not prove that a nest has been eliminated.
Follow product instructions
Do not make homemade insecticide bait by mixing chemicals with food. Anses urges caution with homemade chemical preparations. Before using a biocidal product, read its label and accompanying information. Follow its intended use, conditions and precautions for occupants, children and animals. Do not improvise doses or mixtures.
A method name such as “gel” or “aerosol” is not enough to promise effectiveness, a protection period or a price. Selection depends on the observations and the product’s conditions of use.
When to seek professional advice
Ask for advice if activity persists, inspection areas are inaccessible, or food and business premises are affected. Share your observations to clarify access, the proposed method, preparation instructions and follow-up. Request a detailed quotation before commissioning work.
Record what changes
Keep a dated record of where ants remain visible. Retain any instructions and intervention report. If activity returns, share the record with your contact so the situation can be reviewed. This guide does not promise permanent eradication.
Frequently asked questions
Does one ant prove there is an indoor nest?
No. An observed route is different from a located nest. Record repeated activity before drawing conclusions.
Can this guide provide a fixed price?
No. Scope, access, method and follow-up need to be specified in a quotation for your situation.
Discuss your situation
Contact Speed 3D Services with your town and observations. Coverage at your address and appointment availability must be confirmed.
Call +33 4 26 84 07 35 · Request a quote
Revised 11 October 2026. Sources consulted: Anses on homemade chemicals (French); DGCCRF on biocidal product information (French); University of California on ant observation and prevention. No customer case or quantified outcome is claimed.