Using this product is easy! First, take out the plaster block from the kit. Use the hammer and chisel carefully to break the plaster and find the hidden treasures like metal coins, plastic gemstones, beads, and the stone skull bead. When you're done digging, gather the cord, skull, and beads. Tie knots in the cord to create your own pirate keychain. As for safety, always be careful when using the hammer and chisel to avoid injury. Also, keep the small parts away from children under 3 to prevent choking. To maintain the items, just keep them in a dry place and they'll stay in good condition for a long time.