The ACT! Direct Odor Imprint ™ (DOI) stands and Multi Target Training System™ (MTTS) are designed to offer a versatile, efficient, and fun training experience. With this set, you'll be perfectly equipped to carry out targeted training and odor imprinting and eventually conduct official odor recognition tests (O.R.T). Whether line-ups, squares, triangles, crosses, or circles, your training sessions will always be varied and exciting.