From the 1st of December 2022 iSEKK AS will no longer pick up Big bags with heavy materials (Such as stones, concrete, soil, gravel). The reason for this is the safety when the bags are being loaded for transport. Note that the Big iSEKK is labeled with: Not suitable for heavy materials. For Heavy materials we recommend the Standard iSEKK or the Trolley iSEKK. Both of these bags are very well suited for this type of waste.