Gearwheel crop?

[woodbury22uk]

Cleaning up one of my garden borders this morning I came across over a hundred of these. They are in a nylon type material 10mm diameter with about 20 teeth, and about 8mm deep. My money is on them being discarded by a vaper or something similar, but I really don't have a clue.

Anyone know what they are, please?

[railsquid]

The beginnings of a self-replicating alien machine?

They look like they might be found on the inside of some sort of hosepipe attachment or similar, but that's just a random guess.

Let's hope a member of the cognoscenti will know more.

[emjaybee]

Have you tried washing them and then boiling for ten minutes?

They look like pasta to me.

[Bealman]

Yup, definitely pasta.

[Garyf]

They look like bio media that form part of the filtration system for a pond, koi keepers use them.

Gary

Edit look like K2 or K3 media depending upon dimensions

[emjaybee]

Were they found in one cluster or spread out around the border?

[ntpntpntp]

Yep, Gary wins the prize I reckon!

https://www.allpondsolutions.co.uk/k1/

[woodbury22uk]

Thanks for identifying these. It sort of makes sense. Our previous neighbour had a pond which was removed about 2 years ago. However the current neighbour's garden has just been redeveloped and re-fenced, so the earthworks have generated all these.

I knew someone here would know the source. I suspect that they have been mixed in with the soil and might be coming to the surface for a while to come.

[Bealman]

Well, if they are bio media, maybe they'll still swell up like pasta when you boil em!

Wouldn't sample them though....