If a company uses 30 X 1Ltr cartridegs a month,
This would equate to 360 Cartridges a year
If you collect all the 360 empty cartridges over the course of 1 and 10 years you would end up with the below
After one year you would end up with around the size of car and caravans worth of plastic waste!
After ten years you would end up with around the size of 7 Olympic swimming pools of plastic waste!