Where to buy CO2
Which CO2 bottle do I need?
For our CO2 traps, we recommend using a 10 kg gas bottle. However, you could also use 5, 6, or 20 kg if you prefer.
Where can I get the CO2 bottles?
The gas bottles are not included in the contents.
The gas bottles can be acquired or rented at drink retailers or bottle depots for a deposit. A door-to-door delivery service may also be available in some locations.
The following sites offer competitive renting prices:
- Roberts Oxygen
- National distributor of food grade CO2: Air Gas
Air Gas has over 900 locations throughout the US.
Other CO2 suppliers are mostly regional, Welding and Brewing suppliers.
How long does a gas bottle last?
How often you need to change the gas bottle depends on:
- what size you use and
- which release rate of CO2 you use
If CO2 is released continually over 24 hours with our recommended release rate of 0.5 kg/day, a 10kg CO2 tank will last about 20 days.
The BG-CO2 Timer - save CO2
Depending on the mosquitoes you are bothered by, the mosquito species are active at different times of the day and night. Thus, with our BG-CO2 Timer you have the possibility to limit the CO2 output to the main activity times of your local mosquitoes (for example only ten hours a day). In this way, the CO2 bottle lasts longer and you save money.
We recommend following time frames for the different mosquito types:
- House mosquitoes: 6am - 9am and 4pm - 11pm
- Flood water mosquitoes: 7am - 11pm
(At the beginning of the nuisance, we recommend to start with 24 hours continuous CO2. When the population decreases, the BG-CO2 Timer can be switched to the recommended time frames.) - Tiger mosquitoes: 7am - 10pm
Recommendation for the handling of gas bottles:
No additional emission of CO2
The CO2 in gas bottles is not explicitly produced to be bottled but is a recovered by-product from other industrial processes.
Therefore, the use of CO2 from gas bottles as a mosquito attractant does not represent an additional CO2 contribution to the planet, but is merely a delayed diffusion of CO2 as industrial waste.