Introducing Eco-Air Refills to keep your world smelling fresh and clean. Eco-Air Refills outperform gels, wicks, and aerosols using unique fragrances that are designed for consistent and powerful 30-day performance. The refill is a solid that has been infused with natural fragrance oils so the air you breathe is chemical free and there's no messy gels or liquids. From conference rooms and entryways, to restrooms and trash rooms.