KEEP COMPOST SMELLING FRESH: Biostrike’s compost crock filters use premium activated carbon batting to trap and neutralize foul odors at the source-keeping your kitchen fresh and helping deter pesky fruit flies from lingering around your compost bucket. EXTRA THICK FOR LONGER USE: At 0.44” thick, our biodegradable charcoal filters are twice as denser as typical countertop bin filters. That means better odor absorption and longer-lasting freshness. Replace every 2-4 months to maintain peak performance. FITS ANY SIZE COMPOST PAIL: Each 5.5-inch round filter fits most standard compost bin lids-and can be trimmed to size for smaller lids in seconds. No mess - just easy, reliable odor protection for any kitchen compost crock. ADVANCED ODOR LOCK TECHNOLOGY: Engineered with dense, multi-layer activated carbon, our compost bin filters don’t just mask smells—they trap and neutralize them deep within the carbon structure. That means cleaner air, fewer flies, and a fresher kitchen every day. PROUDLY MADE IN THE USA: Our compost charcoal filter replacements are crafted with care in the USA using high-quality materials you can trust, helping families keep their homes smelling fresh for over 34 years. Keep your kitchen smelling clean and fresh with BioStrike Compost Bin Charcoal Filters—your first line of defense against unpleasant compost odors and fruit flies. Designed for countertop compost bins and kitchen compost pails, our round replacement filters feature thick activated carbon batting that absorbs and traps strong smells caused by decomposing food scraps. Whether you're composting banana peels, coffee grounds, or vegetable trimmings, these high-performance carbon filters keep your indoor compost bin from becoming a source of unwanted kitchen odors. Each filter is 0.44 inches thick—twice as thick as most competitor compost bin filters—providing longer-lasting performance and superior odor-blocking capabilities. The secret lies in our dense, multi-layer design that offers advanced odor control while helping reduce fruit fly activity by capturing scent trails in the carbon's micropores. With proper use, each filter lasts up to 2–4 months, making it a convenient, low-maintenance solution for your kitchen composting system. Our 5.5-inch round filters fit most standard-sized compost pail lids and can be easily trimmed down for a custom fit—ideal for countertop composters, stainless steel compost crocks, ceramic kitchen compost bins, and more. Installation is fast and tool-free: just trim to size and insert the filter into the lid’s ventilation area. Proudly made in the USA using durable, high-quality materials, BioStrike compost filters are trusted by households for over 34 years. Whether you're a home gardener, eco-conscious cook, or just want a more pleasant indoor composting experience, these charcoal compost filters provide reliable odor protection and long-lasting freshness. Upgrade your kitchen compost bin filter system with BioStrike—where clean air and cleaner kitchens start with smarter filters.