A type of adulticiding that leaves a residual to create a barrier is typically applied using:

The application method that is typically used for adulticiding, which creates a residual barrier, is through the use of backpack misters. Backpack misters are designed to deliver a fine mist of insecticide that adheres to surfaces, allowing for an extended residual effect that continues to impact mosquito populations over time. This is particularly important in areas where a sustained barrier is needed to control mosquito populations effectively.

In contrast, other methods such as aerial applications and thermal fogging are generally more suited for immediate knockdown of adult mosquitoes rather than building a persistent barrier. Aerial methods cover large areas quickly but may not provide the same level of residual efficacy since they disperse insecticides over a wide range without the ability to adhere to surfaces. Thermal fogging, while effective for immediate control, produces a fog that dissipates quickly and does not leave a lasting residue. Handheld sprayers can be versatile and useful for applying insecticides as well, but they are less commonly associated with creating a long-term barrier compared to backpack misters.

Backpack misters strike a balance between ease of use and efficacy for residual application, making them particularly suited for creating barriers against adult mosquitoes.