Let me start by saying I've tried countless car air fresheners, and the LITTLE TREES Fiber Can in Black Ice is one of the more interesting ones I've tested. The citrus and cedarwood scent is indeed mysterious and enticing when you first open it - it's like walking into a high-end barbershop mixed with a fresh winter breeze.

The fiber construction is clever. Unlike traditional hanging air fresheners that drip or lose scent quickly, this can maintains its fragrance surprisingly well. I kept mine in the cup holder for maximum airflow, and could still detect subtle notes after 6 weeks. Pro tip: placing it near air vents (but not blocking them) seems to extend the scent life.

Where this product shines is odor elimination. My dog's post-park car rides used to leave a lingering... essence. The Black Ice variant actually neutralizes odors rather than just masking them - a feature many cheaper fresheners fail at.

However, there are some caveats. The scent intensity varies wildly based on placement and temperature. On hot days, it's almost overpowering for the first hour after parking. During winter months, I had to move it directly under a vent to notice it at all. Also, while advertised for home use, I found it underwhelming in larger spaces like bathrooms.

The recycled fiber aspect is nice eco-conscious touch, though I wish they offered refills instead of entirely new cans. At about 60 days per can (your mileage may vary), the 4-pack gives you good coverage for about 8 months if you're okay with fading scents toward the end of each can's life.

Final verdict? If you want consistent, strong fragrance from day one to day sixty, this might disappoint. But if you appreciate a subtle, sophisticated scent that evolves over time while actually eliminating odors (not just covering them), the Black Ice Fiber Can is worth trying - especially if you catch it on sale.