BioStrike Compost Crock Activated Carbon Filters 5.5 Inch 4 Count Review

A 4 count pack of 5.5 inch round activated carbon filters for compost crocks, compost buckets, and food-scrap pails.

Seller pricing varies Updated May 18, 2026

Bottom line

BioStrike Compost Crock Activated Carbon Filters give round compost crock lids a focused 5.5 inch refill option for kitchen food-scrap collection.

BioStrike Compost Crock activated carbon filters package

What this review covers

These filters suit gardeners who use a compost crock or small pail with a round lid insert and want a compact replacement pack near the kitchen.

The upside

  • The 5.5 inch round size fits many compost crock lid inserts.
  • The 4 count pack gives a small refill supply for a single kitchen pail.
  • The listing states activated carbon filter material and made-in-USA production.

The tradeoffs

  • The round shape may need trimming for smaller lid openings.
  • Compost crock filters still need replacement as kitchen scraps collect.

Fit and feel

Good match:

This pack fits gardeners who use a round-filter compost crock and want a small refill set for kitchen scrap collection.

What to know:

Measure the lid insert before use. Replace the filter as part of the pail cleaning rhythm, and keep the unused filters dry between changes.

Check BioStrike Compost Crock Activated Carbon Filters 5.5 Inch 4 Count

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Full review

A round filter pack for compost crocks

BioStrike Compost Crock Activated Carbon Filters give compost crocks and small food-scrap pails a 5.5 inch round filter refill. The 4 count pack is easy to store beside liners, a cleaning brush, or a small stack of pail supplies.

The listing states activated carbon filter material and made-in-USA production.

The size suits round lid inserts

The round shape is meant for crock lids with a circular filter area. Measure the lid opening before ordering, then trim carefully if the filter needs a smaller fit.

Keep the remaining filters dry until the next change.

It supports a tidy food-scrap station

Filters are one part of the compost crock routine. They pair with regular emptying, rinsing, and a clear route from the counter to the outdoor bin, tumbler, worm system, or pickup container.

Good match

This pack fits gardeners who use a round-filter compost crock and want a small refill set for kitchen scrap collection.

What to know

Measure the lid insert before use. Replace the filter as part of the pail cleaning rhythm, and keep the unused filters dry between changes.