Unfortunately, butane is often used as a propellant in the aerosol cans. Even worse, as Koehler explained, is that there have been cases where people haven’t properly sized the amount to the room size, leading them to set off multiple bug bombs. Koehler explained that because there is little to no air circulation in the small spaces where roaches reside, the insecticide won’t reach them. These are activated in an unoccupied room on the theory that the space fills with insecticide and kills off the roaches. Each little canister contains roughly 150 bait applications, so you can put bait in a lot of different places, increasing your chances of success.Īs we researched and tested these methods, we also found a lot of stuff that does not work, including kill-on-contact sprays, bombs, and foggers.Īnother category we dismissed without testing: total release foggers (aka bug bombs), like the Harris Indoor Fogger.
And if you’re dealing with a larger infestation, or if you might be dealing with a longer-term roach issue, the Terro bait powder is a very economical choice. We like that, unlike a gel, a powder won’t get all goopy if you accidentally put your hand in it or rub up against it. Other powders we tried come in larger squeeze bottles, and they are much harder to portion out in small amounts. Each pump dispenses less than 1/16th of a teaspoon of bait powder.
This powder bait comes in a unique pump dispenser with a 2-inch-long applicator, which works well in hard-to-reach areas, such as under the fridge. And though it’s not quite as neat as a bait station and isn’t able to stick to a vertical surface like a gel, it’s effective if you can apply it right where roaches are living. The Terro T530 Roach Bait Powder is another option.
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