A method of adding a multi-application insect repellent additive (hereafter, “the additive”) includes the steps of: providing the additive, immersing a textile in a fluid medium including the additive within a laundry-cleaning apparatus, disseminating the additive throughout the fluid medium and the textile, partially removing the fluid medium from the textile and drying the textile. After completing these steps, the additive is retained by the textile. In the disclosed embodiment, the additive may be formed of permethrin, encapsulated natural extracts, and or other disclosed formulations.
