CO2 Gas System FAQ's

For a list of CO2 gas suppliers please see our CO2 gas suppliers page.

1. If Mega-Catch™ traps don’t need carbon dioxide (CO2) gas to attract mosquitoes why does the Ultra include a CO2 gas release system?
   The system is designed to increase capture rates, but its use is entirely optional. Even without the system, or with the system turned off, Mega-Catch™ ULTRA traps catch large numbers of mosquitoes and other biting insects.
   
   
2. How does the Ultra’s CO2 gas release system work?
   Conventional traps which burn propane release CO2 in a continuous stream as part of the exhaust gases from the propane combustion process. Mega-Catch’s™ gas release system is designed to replicate a key element of human/animal respiration by releasing quantities of pure CO2 at varying rates over fixed intervals to produce a concentration gradient in the air plume emanating from the lower part of the trap. Mosquitoes use this concentration gradient to navigate their way to the trap.
   
   
3. Where do I get the CO2 from?
   The Mega-Catch™ system is able to release more CO2 (and in a cleaner form) than propane burning traps by using the same cylinders as those used by the beverage industry to carbonate (put bubbles into) the likes of beers, sodas and sparkling mineral waters. CO2 gas in this form is able to be purchased from hundreds of gas supply outlets throughout North America (and the rest of the world) like PraxAir, Air Products and BOC Gases. Alternatively, look in your yellow pages under Industrial Gases or Welding Supplies.
   
   
4. How long will a CO2 cylinder last?
   Quantities of CO2 gas released by the Mega-Catch™ system can be adjusted between five settings by a simple touch of the Gas Select button on the programmable timer. We recommend setting #2 or #3 for normal operation. However in preparing for an outdoor function you might wish to operate the trap on setting # 4 or #5 for a limited period. e.g. 12 hours per day for 2 or 3 days.

   A 20lb (9kgs) CO2 gas cylinder used at the recommended settings should last for up to four months.
   

5. Is CO2 safe?
   Pure CO2 is a natural product and entirely safe in the small quantities released by the trap. However the ULTRA trap should not be used indoors when the optional CO2 gas release system is in use.

6. Do any other Mega-Catch™ traps use CO2?
   A CO2 Gas Upgrade Kit  (sold separately) converts or 'transforms' the PRO 900 PREMIER XC to top-of-the-line ULTRA mosquito trap specifications making it Carbon Dioxide (CO2) capable.  An ULTRA manual and full set of stick on badges (included in the kit) completes the transformation.

7. What size is the thread on the gas regulator and does it work worldwide?
   The CO2 gas regulator included with the Pro 900 ULTRA trap has a US specification thread (CGA 320).  A CO2 Gas Regulator Adaptor (sold separately) which conforms to British Standard BS341 No.8 Thread will be required if the trap is to be used outside of North America i.e. Europe, Africa and Australasia.

For a list of CO2 gas suppliers please see our CO2 gas suppliers page.