Plantskydd dried bone meal spray works by emitting an odor that deer associate with predators, repelling the animal before it nibbles on plants. Provides up to 6 months of protection over winter on ornamental shrubs and 3 months on most other broadleaf plants. The odor is not unpleasant to the applicator.

Does bone meal repel deer?

Deer must be able to smell blood meal for it to repel them. ... Mixtures of half-and-half blood and bone meal or lion's manure in the same fashion can also be effective.

What is the best natural deer repellent?

The most effective natural, homemade deer deterrent is a spray made of putrid smells, namely eggs, garlic, and chili peppers. All you have to do is spray the mixture on your plants, and deer will not go near due to the offensive fragrance that the spray gives off.