d04dd710____Recycling___City_of_Toronto__Best_uses
[Type] Grass clippings [Features] Readily available; decomposes quickly; may heat excessively and mat if layers are thicker than 7 cm (3"); may contain herbicides [Sources] Lawn [Best uses] 
Leave on lawn or mix with leaves to use in garden or compost pile
Yard waste, lawns and composting - Overview - Garbage & Recycling | City of Toronto
Best uses