A "deficient" soil sample contains how much termiticide when applied at the lowest labeled rate according to NC Structural Pest Control Committee Rules?

A "deficient" soil sample is defined in terms of the amount of termiticide present when the product is applied at the lowest labeled rate. According to the NC Structural Pest Control Committee Rules, if the soil sample contains less than 25% of the expected amount of termiticide, it is classified as deficient. This means that when the termiticide is applied at the minimum rate suggested by the manufacturer, the concentration in the soil is inadequate to provide adequate protection against termites.

Understanding the classification of a deficient soil sample is crucial for pest control professionals, as it informs their decisions on whether further treatment or reapplication of the termiticide is necessary to ensure effective control.