Yes, using our crushed shells as a top dressing can help deter fungus gnats from laying eggs in damp soil by creating a barrier. If you already have an infestation, we recommend treating it first.

Yes, plants have no problem growing through the shells.

We’ve had a lot of great feedback from customers with regards to the effectiveness of crushed shells in deterring pests like slugs. However, no method is 100% effective all of the time – living things will do almost anything to survive!

You can find your local stockist by visiting our stockist page here.

Please email your company information to caryl@shellonearth.co.uk. This includes your company name, registration number, VAT status, and location.

Check out our handy coverage calculator at the bottom of this page.

We recommend placing the shells in areas where they will receive full sun. As with any aggregate, if they are placed in shaded or damp areas they will almost certainly turn green over time. A South-facing position is ideal.

Until late 2016, we had a license to release the shells back into the sea. When the license was discontinued, we sought a creative way to utilize the shells instead of sending them to landfill. After two to three years of research and development, Shell on Earth was established in early 2019.

Currently, we only sell online and at occasional events.

Absolutely! Place your order online and choose the ‘pickup’ option at checkout. We will email you once your order is ready to arrange a convenient collection time. Collections are available Monday to Friday, 9am-3pm (excluding bank holidays).