Is Castor Oil completely safe to use in the garden?
I've got vole(s) eating my onions and garlic. It tunnels around until it finds a row, then just goes down the line, munching its' little azz off! Every morning 3 or 4 more plants are gone. It's already wiped out 15 row feet of onions in one bed. Now, its moved across the garden to another bed of onions and a bed of garlic!
Doing a little research, it sounds like castor oil is effective in driving these pests away.
I've found a castor oil based repellent (Dr. T's Mole Out @ Lowes). It's 10% castor oil mixed with 90% clay pelletized. Now, the label says safe for yards, flower beds, gardens, etc. but it doesn't say VEGETABLE gardens specifically. Paraphrasing, the directions say poke a hole in the tunnel every five feet and pour a tablespoon of the granules in. Then, cover the hole. Lastly, sprinkle over entire area and water in - lasts up to 60 days.
Have any of you folks tried this approach? Did it work? I guess I'm a little concerned about sprinkling this stuff over the whole row and/or garden, being these are vegetables I'm planning on eating myself lol.
I sure need to do something though, that's for sure.
Thoughts / opinions / ideas most welcomed.