Please refer to the Manufacturer's information for the specific grinder pump you have (Environmental One or Hydromatic), which is attached below.
USING THE SYSTEM ...
To avoid blockages and damage to the grinder pump, the following items should NOT be placed into the system:
Personal wipes (including those marked "flushable")
Sanitary napkins, tampons or condums
Socks, diapers, rags or clothing
Baby wipes, Shop Wipes, Adult wipes
Gravel, sand (including aquarium stone) and coffee grinds
Disposable toilet cleaning products
Plastic (toys, utensils, etc.)
Lubricating oil, grease, paint, large amounts of cooking oil
Strong chemicals (household, etc.)
Gasoline or diesel