Black Knight 4" Dia x 16" Long Filter Brushes - 6 Pack

Marsoni

M251S

$16.95

Get it in 3 business days with 1 day shipping. Friday, May 29

Black Knight 4" Dia x 16" Long Filter Brushes - 6 PackWhat are Black Knight Filter Brushes: Black Knight filter brushes are made from the very highest quality Hydrotek polypropylene twisted into two stainless steel wires to form a cylindrical brush with a loop at one end for hanging. The other end is capped with a plastic knob for safety. They last indefinitely and are the easiest to use, most efficient and most cost effective pond filter medium you can buy. Our brushes are used in filtration systems in

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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As mentioned in about her Nerf toy review, these are pretty much the only toys we buy for our power chewer. And our boy LOVES peanut butter— pretty sure he’d jump off a cliff for a spoonful of Jif. So when I saw 1) our brand of toy, 2) in peanut butter scent, it seemed like a no-brainer. I thought he’d smell the peanut butter and tear the package open before I even got home. Much to our dismay, this one had absolutely no smell and must not taste like peanut butter either, because he has very little interest in it.

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Reviewed in the United States on October 14, 2023

Verified Purchase

Joe Bogan

Whiting, US

★★★★★ 1

Lacks durability

Lacked durability. Clear silicone outer shell started to break off once my dog chewed it. Lasted only a day or two. Wouldn’t recommend.

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Reviewed in the United States on January 14, 2026

Verified Purchase

Does nothing to stop dogs from barking. I have other similar boxes that work great. Ordered this one because thought it was cute but doesn’t work.

Massapequa, US

★★★★★ 5

Wonderful, safe chew toy

Durable but safe for dogs teeth. Our large red puppy chew on this all the time and we’ve had it for weeks.

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Reviewed in the United States on December 24, 2025

Verified Purchase

Zoya Raysberg

Dallas, US

★★★★★ 2

Not durable at all but pooch loved it for a few minutes before destroying it

I don't consider my dog's super chewers. But my border collie lab mix got through this in just a few minutes. He definitely really liked the smell. Both my dogs liked the smell of this product a lot. But I need it to last longer and once you get past the softer springy outer layer, the inside is just hard plastic. So once I realized he was chewing up the hard plastic the chew toy was a goner

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Reviewed in the United States on December 3, 2025