Which formula is considered the least effective but most widely used for controlling cockroaches in kitchens and restaurants?

Bait is considered the least effective but most widely used formula for controlling cockroaches in kitchens and restaurants primarily because it relies on the cockroaches consuming the bait for it to be effective. While baits contain attractive food substances mixed with an insecticide to lure cockroaches, their effectiveness can be influenced by several factors, including the cockroach species, the level of infestation, and environmental conditions.

In high-pressure environments such as kitchens and restaurants, where food sources are abundant, cockroaches may prefer available food over the bait, reducing its efficacy. Furthermore, if the bait is not placed strategically or if cockroach populations are too large, visible results can be slow to manifest, leading to a perception of ineffectiveness despite it being a common practice due to ease of use and low disruption in active environments.

In contrast, other controlling methods, such as traps and fogging agents, may offer immediate results, though they can also have limitations. Liquid pesticide solutions can have a broader application area but may also present toxicity concerns in food service settings. Thus, while bait is widely used due to its convenience and lower toxicity, its effectiveness in high-infestation contexts makes it less reliable compared to other methods in certain situations.