"If you finely chop citrus rinds and sprinkle them on the mulch in your garden, they keep neighborhood cats, dogs and other critters away from your veggies. I guess animals don’t like the smell of the orange oil."-some other pinner
Lay down a thick layer of CARDBOARD in your raised garden beds to kill the grass. It is perfectly safe to use and will fully decompose, but not before killing any grass below it. They’ll also provide compost and food for worms. @ Home Improvement Ideas
Baking soda neutralizes the ph in the soil and nothing will grow there. use baking soda around all of the edges of flower beds to keep the grass and weeds from growing into beds. Just sprinkle it onto the soil so that it covers it lightly. Do this twice a year - spring and fall. Awesome!