Scale inhibitor

Where i can buy scale inhibitor?
I can't find in your shop.
Is it possible to substitute it with other materials? For example the salt for dishwasher?

Can you tell what's the composition?

Hello, thank you for contacting Dreame.
May we please know the exact model of your device?
Are you looking to purchase a scale inhibitor?
We kindly inform you that devices sold in Southwestern European countries currently do not support the use of this accessory.
If you have any other questions, please feel free to contact us again.
Thank you for your understanding.