"Saudi Insect Refill" refers to a product designed to replenish a plug-in or electric insect repellent device, commonly used to control mosquitoes and other flying insects. These refills, sold under various brands like Pif Paf, Raid, and ARS, typically contain a liquid insecticide that is vaporized by the device to provide long-lasting protection, especially during the night. The product is widely available in supermarkets and online stores across Saudi Arabia.