The best replacement for dirt is soil.

The best alternatives to dirt are rated as following:
★★★★★  soil
★★★  sand
★★★  dirt 2
★★  hydro
★★  grid
★  wrc
★  mold
★  hydroponics
★  forza
★  black mold
★  motorstorm
★  fleas
★  bender
★  dust
★  lice
★  potting soil
★  topsoil
★  dirt
  eco complete
  clay
  ear mites
  pg skillet
  contamination
  asphalt racing
  forza 2
  top soil
  strange
  nevermind
  grass
  sega rally
  sega rally revo
  bed bug feces
  mud

Your alternative for dirt is not listed? Suggest!
Speaking about dirt, one probably shouldn't forget about worms.

Other search terms related to dirt and their ratings are:
★★★★★ worms
★★★★★ gummy worms
★ k dirt
★ grass
worms cupcakes
You have in mind a companion for dirt and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of dirt in all years. Click on graph for more.
dirt
soil
sand