Shell On Earth Crushed Whelk Shells - Single Pack 11kg

The barrier effect is immediate upon application. Slugs will encounter the shells as soon as they try to cross the treated area.

Yes, crushed whelk shells are excellent for containers. They improve drainage and aeration, and can also serve as a slug barrier around potted plants.

Once applied, the shells are a permanent addition to your soil structure and will remain effective as a barrier for a very long time. They break down very slowly.

The shells are natural and generally safe. However, ingestion of large quantities could cause digestive upset, so supervise pets in areas where shells have been applied.

The shells are crushed to a size that creates an effective barrier and can be incorporated into soil without excessive bulk. Specific particle size varies but is suitable for the intended uses.

Crushed whelk shells are a source of calcium, which can be beneficial for plant growth and soil structure. They are not a primary fertilizer but contribute to soil health.

The single pack contains 11kg of crushed whelk shells.

Ensure the layer of crushed whelk shells is at least 20-30mm deep and applied in a continuous band. Reapply or thicken the layer if it has been disturbed by rain or gardening activities.

Check if the shells were thoroughly mixed into the soil rather than just layered on top. For severe clay soil issues, a larger quantity or combination with other amendments like compost may be necessary.

Store the product in a dry location. If applied, natural rainfall will wash away excess dust and the sharp edges will remain effective.