We get our sponges from The MoonBeam Farm. This is a family owned organic farm in north California. They grow Loofah and Lavender. All Organic, so no pesticides or chemicals used. I am so glad I found them, it is really hard to find Organic Loofah. The sponges are the fruit of the Loofah plant, which is family of the cucumber.
Loofah can be used as a sponge in the shower and to wash dishes, windows etc.
You have the option to buy a whole Loofah Sponge still in the skin. It is very easy to peel the skin after soaking it for a night in water and then you can cut the sponge in 3 parts.
It is also possible to buy a Loofah sponge ready to go.