Question 1

What is Biogents HYDRO FILM?

Accepted Answer

Biogents HYDRO FILM is an insecticide-free alternative to larvicides that prevents mosquito larvae from developing into adult mosquitoes. It uses Dimethicone (polydimethylsiloxane), a WHO-recommended silicone oil, to form a very thin physical film on the water surface that interferes with larvae and pupae breathing.

Question 2

What are the key benefits of our product vs other solutions?

Accepted Answer

Our main advantages are:
Extreme low dosage: Only 8-10 drops per m² (0.2ml per m²) compared to higher doses from other manufacturers
Long-lasting protection: Designed for long protection, up to 8 weeks, in real-world conditions
Mechanical mode of action: Works physically, not chemically. No insecticides
Favorable regulatory status in the EU: Based on mechanical action, no Biocide registration necessary
WHO-recommended technology: Scientifically validated and endorsed
Safe for humans, pets, and environment: Non-toxic formulation
Easy to use: Precision dropping direct into standing water

Question 3

How much does it cost and what's the value proposition?

Accepted Answer

Retail price is 24.90 € incl. VAT. The bottle is designed to provide season-long coverage for typical household container use thanks to the very low dose and long protection per application.
Compared with similar products, the total cost over a whole season is often much lower:
BTI / biological larval control products typically require repeat treatments every 1–2 weeks, which adds up over a season (product + time).
Sprays and repellents often mean repeated purchases and frequent reapplication, so the season cost can quickly exceed a single bottle.
So while the upfront price can look higher than one pack of another manufacturer, the cost per season is usually significantly cheaper, with the added benefit of fewer reapplications and less effort.

Question 4

Is our product safe for aquatic life?

Accepted Answer

When used as directed in small, contained standing water, the technology has been evaluated by the WHO as presenting no unacceptable risk to the environment. The product acts mechanically at the surface and is not a chemical toxin. All components are REACH-compliant and have favorable environmental profiles.

Question 5

Is our product safe for children?

Accepted Answer

Yes, when used as directed. Dimethicone is a silicone oil with extensive use in everyday applications including baby anti-colic drops, food processing, and cosmetics. The product is intended for small, contained standing water and should always be kept out of reach of children. The WHO safety assessment confirms no risk to human health. The formulation contains 5% ethanol which does not require hazard warnings or child-resistant packaging.

Question 6

Is our product safe for pets?

Accepted Answer

Yes, when used as directed. Dimethicone is inert and non-toxic to mammals. The WHO documentation specifically addresses animal safety across multiple species.

Question 7

Can I use the treated water for plants or gardening?

Accepted Answer

Yes, treated water is safe for watering plants. The PDMS film works only on the water surface and doesn't affect water quality or plant health.

Question 8

What is the difference between Dimethicone and BTI? What makes Dimethicone more efficient?

Accepted Answer

Key differences:
BTI (Bacillus thuringiensis israelensis):
Biological larvicide that must be ingested by larvae
Requires reapplication every 1-2 weeks
Performance can vary depending on larval stage and feeding behavior
Cost: €0.60-€1.50 per treatment lasting 3-4 weeks
Several applications needed per season
Dimethicone (Biogents HYDRO FILM):
Mechanical mode of action: creates physical surface film
Ultra-low dosage per m²
Lasts up to 8 weeks in real-world conditions
Works regardless of larval stage because it acts at the water surface
Cost: ~€0.12 per treatment lasting up to 8 weeks
Fewer applications = lower labor and operational costs
More reliable in urban breeding sites with organic load

Question 9

How do you use the product?

Accepted Answer

It's extremely simple:
Identify standing water sources (rain barrels, planters, gutters, bird baths)
Apply 8-10 drops per m² of water surface (0.2 ml per m²)
The product self-spreads across the surface within 60 seconds
Protection lasts up to 8 weeks
The surface film is self-healing, meaning it can reform after minor disturbance
No mixing, no precise measuring required.
Do not use
In large natural water bodies (ponds, lakes)
In drinking water

Question 10

What happens if it rains a lot? Should I treat the water again?

Accepted Answer

The PDMS film is remarkably resilient:
It's self-healing, meaning it reforms after disturbance
Light to moderate rain won't significantly affect it
If the container overflows or the surface film is removed or heavily disturbed, reapplication is recommended.

Question 11

What if I scoop water out of a rain barrel with a watering can — does that disturb the HYDRO FILM coverage?

Accepted Answer

Taking water out with a watering can is usually not a problem. The film is designed to self-spread and self-heal after minor disturbance.
If you scoop gently and there is still water left in the barrel, the film will reform on the remaining surface within a short time.
The film on the water you remove will leave with that water — so the treated surface area becomes smaller as the water level goes down, but the remaining water stays protected.
Reapply if the barrel is emptied/refilled, if there is strong, repeated agitation, or if you notice the surface film has been removed or broken up for a longer time

Question 12

How long does one bottle last?

Accepted Answer

The 24ml bottle is designed to cover many treatments due to the low dosage. Real-world duration depends on how many containers are treated and how often overflow or disturbance happens
For a typical rain barrel (1m²), you need 8-10 drops per treatment
For average household use, one bottle provides season-long protection → One bottle; One season.

Question 13

Can it be used preventively in dry containers?

Accepted Answer

Yes! Apply to dry containers before water accumulates (e.g. at the start of rainy season). When water fills the container, the product will activate and spread.

Category	Conventional mosquito larvicides	Biogents HYDRO FILM
Definition	Products designed to kill mosquito larvae in water using chemical or biological active ingredients	Insecticide-free physical alternative to larvicides that forms a surface film on standing water to interrupt mosquito development
Mode of action	Chemical or biological action requiring ingestion or exposure of larvae	Physical surface barrier that interrupts access to air at the water surface
Target stage	Primarily mosquito larvae	Mosquito larvae and pupae (surface-dependent stages), adults (discouraged from laying eggs)
Application method	Mixed or dispersed into water depending on formulation	Applied as drops directly onto standing water (no mixing required)
Mechanism dependency	Depends on ingestion/exposure; effectiveness can vary with water conditions	No ingestion required; works physically at the water surface
Reapplication	Varies depending on product type and conditions	Up to 8 weeks depending on environmental conditions
Where to apply	Various water bodies depending on product approval	Small standing water containers (e.g. plant saucers, rain barrels, buckets, gutters)
Primary outcome	Killing of mosquito larvae	Prevention of adult mosquito emergence
Category	Conventional mosquito larvae control method	Insecticide-free alternative to mosquito larvicides for modern mosquito prevention at the source

Alternative to Mosquito Larvicide: Biogents HYDRO FILM

How it works

Mosquitoes lay eggs in standing water and the larvae and pupae need access to the water surface to breathe.

How to apply

Where to use

Take control of the complete mosquito life cycle for a safe garden

Alternative to mosquito larvicides – How HYDRO FILM is different

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