BG-Mosquitaire CO2 Timer for Mosquito Traps – Adjustable Timer for CO2 Release – Enhances Mosquito Catch Rate – Ideal Accessory to Reduce CO2 Consumption - Manage Multiple Traps Together

Easy-to-set timer that helps the CO₂ tank last much longer, cutting down on expensive refills. The timer itself is a bit pricey, but it should quickly pay for itself with the savings on CO₂.

I agree that this is expensive for what it is....but I also haven't found another device quite like this. I use a schedule of 6-9am/4-12am. That is 11 hours of operation, which will double the lifespan of my 20lb CO2 tank. I got ~24 days out of my first 20lb CO2 tank running continuously at the 0.5kg/h setting with my BG-Mosquitaire-CO2 before adding the timer. The timer will pay for itself in one season. It's also pretty easy to remember how to operate with the 3 buttons. By comparison, I have a circulation pump timer (also 3 buttons) for my water heater and it's a nightmare...I need to dig up the pdf instructions multiple times a year. The other reviewer suggested using a hose timer and some fittings. Clever idea, but I don't think that would work well with a gas...the seals are completely different. There are other gas timers/solenoids you can find, but those are for indoor applications (aquariums & hydroponics). The BG CO2 timer was clearly built for outdoor use. Well, almost (-1 star)...the battery compartment door doesn't have a gasket for some reason, but it also secures with 2 screws and has flashing around the edges of the door. That was a curious choice but I believe it would keep rain out (though would not survive being submerged). You can stuff the 9V battery in with the contacts inward and that made me feel OK with minor water intrusion.

This Timer is really hard to set up. Complicated to figure out. I'm giving it 2 stars because, I guess it works once you do set it up, but I caught noticeably fewer mosquitos the week I used it. Maybe I didn't set the hours at the right times, but I did have the CO2 flowing several hours, mornings & evenings, every day. Anyhow, the next week I stopped using it, and caught twice as many. So save your money for the additional CO2 you will be using. Remember, the goal is to kill mosquitos, not to save money. (If it's all about money, just skip buying the mosquito trap in the first place, and prepare to suffer). EDIT: In response to this negative review, the manufacturer - on their own initiative - offered me a refund, even though it was past the 30-day period. I am impressed by their way of doing business! My opinion of this Timer still stands, but the Biogents Mosquitaire itself works so well, I am going to order a second one for our Lake cabin next Spring, to be rid of these voracious insects down there. And Amazon or Biogents, if y'all are reading this: You've given me the refund, but still I'm waiting for instructions on how to send my Timer back. There's no number to call, or e-mail to which I can send this question. I'll send it back when you tell me how.

I've had the CO2 trap for just under one month. I bought and installed the timer about 2 weeks after i got the trap and saw that it was working well, and I've just run out of CO2 this morning. That seems to line up. I lost little under a month's worth of CO2 by running it 24/7 the first two weeks. So, this is pretty convenient from a time savings perspective. Here in Chicago, I should only have to go refill my tank 2x during mosquito season, not to mention the savings on CO2. Even once a month would be too much for me, personally. Like other reviewers stated, using a garden hose timer may not work due to H2O molecules being larger than CO2 molecules. Also I question how much savings there would be if you got a digital timer like this one, plus the fittings and again, the time savings. Same thing for aquarium based setups, it's not designed for outdoors, plus you have to power it too. This is compact and purpose built. I'm happy with this purchase.

Works OK. Poor design for outdoor use. Not even moisture resistant, let alone rain proof. For $100, they could at least used some gaskets. Lasts about a year outdoors.

I'm not sure how to ask a question so I'll put it in here. I can't get co2 flow through this device. Just a little, but nothing close to the amount of co2 coming out of the regulator. I hear the valve open up and the battery is at full power according to the indicator and my tongue, but when I even try to blow through the top, I can barely get anything through it. Not sure how to troubleshoot it at all. Going to return it unless I here back somehow on how to fix it. I really like the idea and it was really easy to change the time and the two timers built into it. Very intuitive method. The other way I knew it wasn't working is that when I don't use the timer and fully turn up the flow on the regulator I can hear the gas coming out. Not so when I put the timer inline in the tube. The mosquito catcher with the CO2 on all the time works fabulous however.

I had one period where the net had a reasonable (20-30) mosquito catch. The rest of the summer, no more than a couple of mosquitos. It's tricky to know if the CO2 is flowing, and I've accidently dumped an entire tank in a few days, in spite of the timer, which makes for an expensive consumable. A easy flow indicator or streamer would be helpful so you don't just dump your invisible money down the drain. Disappointed, but maybe next season I'll get it working better.

Set timer up for first time today. Steps appeared easy...until the hose connector entering into unit snapped when hand-tightening. The nipple and nut mechanism are constructed of low-quality plastic. I am 2 days past my return window. I'll update if I have any luck with replacement/refund.