No heavy perfumes. Scratch & sniff. Gently cleans away odors for pure, light freshness. Formulated with: No heavy perfumes; no dyes; no phthalates; no formaldehyde. See inside panel for other cautions and information. For use with P&G air fresheners SY-982 and 3260. See device insert for additional safety information. Febreze warmer has a blue light that: Flashes twice when first plugged in to show it’s working. Flashes continuously when it may be time for a new refill. TerraCycle: Recycle at Terracycle.com.