What is the main disadvantage of using surface treatments for termite control?

The main disadvantage of using surface treatments for termite control is that some termites may escape treatment. Surface treatments are applied to the exterior of structures and may not penetrate deeply enough to reach termites that are already inside the wood or other hidden areas. This creates a risk where termites can avoid the treated areas and continue their destructive behavior undetected.

Additionally, since surface treatments primarily target the outer layers, termites that are nested deeper within the structure or in soil could evade exposure. This means that while surface treatments can help reduce the overall termite population or deter new infestations, they are not 100% effective in eliminating all termites, especially those that are already established within the structure.

Other options, while they may present some challenges, do not represent the primary drawback associated with surface treatments. For instance, the cost of treatments and the need for specialized equipment could affect accessibility or affordability, but do not speak directly to the primary issue of treatment efficacy against existing infestations. Lastly, while environmental conditions may influence the performance of some treatments, they do not limit the use of surface treatments exclusively to dry conditions.