Methods of using training aid delivery devices (TADD)

A method of training an animal, said method comprising:

• (a) providing a training aid delivery device comprising (I) a cap, (II) a gas-permeable membrane, and (III) a container, the container comprising a base, an opening, and an interior cavity,
• wherein the gas-permeable membrane and cap can be attached to the opening of the container to create an enclosed compartment comprising the interior cavity,
• wherein the container is impermeable to a training aid substance and one or more volatile organic compounds that are produced or released by the training aid substance, said training aid substance comprising a powder or liquid,
• wherein the gas-permeable membrane is impermeable to the training aid substance but permeable to the one or more volatile organic compounds that are produced or released by the training aid substance;
• and
• (b) placing the training aid substance into the interior cavity of the container;
• (c) attaching the gas-permeable membrane and cap to the opening of the container to create an activated training aid device that contains the training aid substance within the interior cavity, wherein the training aid substance cannot escape the device while the one or more volatile organic compounds that are produced or released by the training aid substance can escape the device through the gas-permeable membrane;
• and
• (d) providing the activated training aid device to an animal and allowing the animal to smell the one or more volatile organic compounds that are produced or released by the training aid substance that permeate or diffuse through the gas-permeable membrane.