The soil lock offers an eco-friendly that eliminates the need to use plastic trays to start seeds and to buy, store and disinfect plastic pots. Upgraded Seed Starter Soil Blocker - Soil Blocker Set. Simply and quickly a set of 8 pieces of 2 inch quad floor blockers. Reduces the need for plastic seed cell trays that waste and saves time and money. They are utilitarian and handmade gardening tools. Cosmetic imperfections and water bath marks that occur during manufacturing are natural and do not alter in any way the functionality or durability of the tools. To make blocks, the wet is compressed into the block mold and then discharged into a tray with ejection handle. Blockers create a "pottless" pot to start sowing seeds. With the blocks, the roots are pruned in the air and the transplant, stunting and slow growth are greatly reduced.