Effects may occur using the Patches within 3-4 days when placed on the soles of the feet (one or two patches, per foot). Obviously, you can use them as long as you see the need and have results.  A patch that is still dry in the morning can be re-used.
Check the color of the patches after use. The patches become lighter after every use. Patches may be stopped when pads are no longer become discolored after use.
Maintenance mode involves use every couple of weeks.