The future of pesticide-free urban mosquito control
A physical barrier that stops mosquito breeding in catch basins
Developed by the University of Copenhagen (patent pending)
Catch basins beneath our streets are hidden breeding sites for the Asian tiger mosquito, which is now establishing itself in European cities. Repeated treatments cannot keep up.
ZikaSeal is a physical barrier that blocks mosquito access without chemicals. The stainless steel mounting unit is fitted once and lasts 10+ years. The barrier insert in it is expected to last 5 years. The subscription renews every insert at the end of that five-year cycle, free of charge, and covers any that has to be replaced earlier. A replacement is never an extra cost to the city.
Water and debris run through the barrier as freely as before. The catch basin keeps doing its job while mosquitoes are shut out of the standing water below.
See how it worksZikaSeal blocks 99% of mosquito traffic to and from the catch basin.
Independently tested by EID Méditerranée, Montpellier, outdoors over two months in the autumn of 2024. The full report is available on Our solution.
The study did not assess whether the device stays watertight over time. It was an entomological test and did not cover hydraulics; those are tested in Copenhagen, where units have been in a live road since June 2024.
Copenhagen, since June 2024. Six catch basins in a road through a forest park, inspected every month. Two and a half seasons with no blockage, no obstruction of flow, no functional failure and no maintenance — not one barrier insert has been replaced.
Graz, Austria — the operational test. ZikaSeal barriers are installed in catch basins in the city, which runs an established chemical-control and entomological-surveillance programme. Across six months of operation through the 2026 season, not one fault was reported in the ZikaSeal app, which municipal staff use to log any problem with an installation. In November 2026 the installations were inspected on site, with the city’s entomologist and Holding Graz – Kanal present, and no blockages or operating problems were found. All three parties agreed afterwards that the trial had been a success and the result satisfactory.
Monaco — a design and fit test, confirming that the barrier could be built for the city’s drain geometry. Completed.
Graz and Monaco were the two pilot cities of our ESA Kick-Start project, which ran from March to August 2026 and is completed. The two were not the same kind of test: Monaco confirmed design and fit, Graz is where the product has run in service. More on the Evidence page.
Chemical-free technology that protects the environment while delivering effective mosquito control.
ZikaSeal blocks 99% of mosquito traffic to and from the catch basin. Independently tested by EID Méditerranée, Montpellier, outdoors over two months in the autumn of 2024.
One fitting and an annual inspection replace the repeated treatment rounds, and the staff hours those rounds take. The long-term cost becomes predictable.
