You do not need to open the pouch to get it to
work. You can just put it in target area after removing the packaging label and
plastic bag. It is recommended that you try to provide some air circulation in
the target area as the bag works best in ambient air. There's no activation
required. It eliminates the odors by absorbing them into its porous structure
like a sponge. You just need to refresh it under the sun for 1 to 2 hours after
3 to 4 weeks.