The best replacement for grit is micron.

The best alternatives to grit are rated as following:
★★★★★  micron
★★★  mesh
★★★  mgp
★★  gritted
★★  oyster shell
★★  ra
★  rock salt
★  true grit
★  tory
★  slamm
★  fighter
★  rugged
★  gravel
★  not to grit
★  oyster shells
★  perlite
★  mesh size
  800 grit
  old true grit
  sharp sand
  rooster cogburn
  original
  tron
  grace
  180 grit
  cascadia
  black swan
  new true grit
  80 grit
  microns

Your alternative for grit is not listed? Suggest!
Speaking about grit, one probably shouldn't forget about chicken feed.

Other search terms related to grit and their ratings are:
★★★★★ chicken feed
You have in mind a companion for grit and it is not yet here? Propose!



Google Trends

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grit
micron
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