Rodent control — Rats in Paris & Île-de-France — SOS 4D Paris

Professional rodent control against rats combines a precise diagnosis of the species and paths, secure rodenticide baiting (TP14 products authorised by ANSES), mechanical trapping in sensitive environments and sealing of entry points, as part of an Integrated Pest Management (IPM) plan compliant with standard NF EN 16636.

The brown rat (Rattus norvegicus), the most common in Île-de-France, digs burrows in cellars, crawl spaces, basements, sewers and around buildings. The black rat (Rattus rattus), more of a climber, prefers heights: attics, false ceilings, service ducts and frameworks. An adult rat weighs 200 to 500g, lives in a hierarchical colony and moves at night along walls. A female can give birth 5 to 6 times a year, with 6 to 12 young per litter: an isolated presence becomes an infestation in a few weeks.

Rats settle as soon as they find access (cracks in facades, unsealed service ducts, cellar hatches, defective siphons and pipes), a permanent food source (poorly maintained bin rooms, ground-floor restaurants and food shops, composts) and a water source. In Paris, roadworks, old sewer systems and building adjacency promote migration from one building to another: an infested neighbouring building very often contaminates the entire co-ownership.

A rat infestation is spotted by black elongated droppings 1 to 2cm long (similar to an elongated rice grain), deep gnawing on doors, skirting boards, ducts and packaging, dark greasy smears along walls, trails and burrows in gardens or cellars, and heavy running noises at night. A marked ammonia smell in the cellar confirms an active colony.

Rats hide in cellars, basements, crawl spaces, bin rooms, service ducts, false ceilings and back kitchens, as well as outdoors in burrows close to walls, under terraces and near composting points. Mapping these refuges and nocturnal paths determines the effectiveness of baiting.

Rats contaminate food with their urine and droppings and transmit leptospirosis, salmonelloses and various parasites. Their gnawing degrades insulation, pipes and electrical wiring — a frequent cause of animal-related fires in old buildings. In co-ownerships or food businesses, an untreated colony leads to heavy material damage and the risk of administrative closure.

1. 1

   Full inspection

   Complete inspection of the premises, precise identification of the pest, assessment of the infestation level and of the layout of the site in order to define the most effective intervention strategy.

2. 2

   Transparent quote

   A detailed quote is issued before any intervention, presenting the recommended solutions, the response times and any travel costs that may apply.

3. 3

   Professional treatment

   Intervention carried out by a certified technician using mechanical, thermal or chemical methods suited to your situation, in full compliance with current regulations.

4. 4

   Prevention & proofing

   Identification of the causes of the infestation, tailored recommendations and, where necessary, sealing of entry points to limit the risk of re-infestation.

5. 5

   Follow-up & support

   An intervention report is issued, along with post-treatment advice and the option to schedule a follow-up visit or a monitoring contract according to your needs.

Indicative prices — exact quote issued after the free diagnosis.

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After elimination, entry points larger than 20mm are sealed with steel wool, mortar or stainless steel mesh, bin rooms and bins are secured, accessible water points are removed and cellars and surroundings are kept clear. For co-ownerships and businesses, a bi-annual inspection contract remains the best protection against recolonisation from the street.