High Braya19,
They can be cleaned and reused.
In order to reuse a Smart Pot the first thing a gardener should do is let the container dry out completely. The best way to do this is to remove the medium from the container and let the container sit somewhere in low humidity for a day or two. The goal is to get the container itself and any medium, root debris, etc which remains stuck to the fabric to dry out completely. Once dry, the Smart Pot can be rubbed against itself in order to remove as much debris as possible. After removing as much sediment as possible, the Smart Pot can be sterilized.
One common way to sterilize a Smart Pot is to put it in the washing machine with a sterilization solution. It is important to choose a sterilization solution that is capable of killing bacteria. Hydrogen peroxide, OxyClean, or a bleach solution all have the capability to sterilize a fabric planting container. Be sure to rinse thoroughly after the sterilization process to ensure all residuals from the sterilization agent are removed. Growers with a large number of Smart Pots may want to utilize a laundry mat for the sterilization process. Please be sure to remove all soil from the Smart Pots before bringing them to the laundry mat. For gardeners with few containers or for those who do not have access to a washing machine, Smart Pots can be soaked in a container of sterilization solution and agitated manually.
Drying is a very important part of the cleaning process. Do NOT put Smart Pots in the dryer. Smart Pots should only be hung to dry or fluff dried.
Happy Growing! 😋