Is it permissible to return and trench the perimeter after a pretreat as a final step?

The correct answer is that it is permissible to return and trench the perimeter after a pretreat as a final step. This practice is often part of the termite treatment process and serves as a means to ensure that the treated area has a comprehensive barrier against potential termite infestations. Trenching after a pretreat allows for additional pesticide application directly into the soil, improving the effectiveness of the treatment by creating a continuous chemical barrier.

In many termite control protocols, this final step helps to address any gaps that may have been overlooked or to reinforce areas that require additional protection. By ensuring that the perimeter is properly treated, the risk of termites re-entering the structure is significantly reduced.

Other responses reflect limitations or requirements that may not necessarily apply in all circumstances. However, the acceptance of this practice in general is rooted in the understanding that consistent and thorough treatment contributes to longer-lasting protection against termites.