The best replacement for pepper spray is mace.

The best alternatives to pepper spray are rated as following:
★★★★★  mace
★★★★  taser
★★★  stun gun
★★  tear gas
★★  bear spray
★★  wasp spray
★★  gun
★  mase
★  oc
★  mace better
★  mace which is better
★  bear mace
★  cs gas
  oc spray
  pepper foam
  pepper gel
  maze
  human pepper spray
  mace spray
  fogger
  dog repellent
  hornet spray

Your alternative for pepper spray is not listed? Suggest!
Speaking about pepper spray, one probably shouldn't forget about flashlight.

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



Google Trends

Scale is based on the average worldwide traffic of pepper spray in all years. Click on graph for more.
pepper spray
mace
taser