The pads are easy to apply & adhere to the bottom of the foot with ease. If you are sensitive to scents this isn’t over whelming at all. When you peel the pads off they do leave some residue on your foot from the detox packet as well as some sticker residue. The packet as well as your foot will damp and the color of the powder will change to a dark color. It is a little gross looking but you can feel like it do the job.