You can gently rinse the dirt off between uses but no matter what eventually it takes in so much grime it's ineffective and then it just goes in the trash. It is really good at it's job until then though. You get about a half a year out of it.
Those gels are pretty handy if you are wiping up dust and crumbs that haven’t gotten stuck on a surface yet
The breast is reusable and you can wash it in a washing machine normally with your underwear. I think OP has yellow socks.