There are some garden products that may pose health issues for your dog. Forget about using cocoa mulch — it’s a by-product of chocolate. And we all know “no chocolate for dogs!”
Some dogs may have interest in blood and bone meal for obvious reasons. If a dog ingests too much of these products can they cause some serious gastro issues — vomiting, obstructions, diarrhea. Plant fertilizers may contain disulfoton. This chemical can be toxic to pets.
Source: moderndog magazine, spring 2011