Before using repellents, it is critical that you have appropriate expectations regarding repellent effectiveness. To learn why they often don't work the way we would like, visit Repellents.
Several commercially available mammal repellents can be applied to your flowers or in close proximity to them, such as Deer-Away (putrescent whole egg solids), Hinder (ammonium soaps of higher fatty acids), Hot Sauce Animal Repellent (capsaicin from oleoresin of capsicum), and Ro-pel (denatonium saccharide). The fungicides thiram and ziram are also used as repellents. ReJeX-iT (methyl anthranilate) is a chemical that repels Canada geese, starlings, and a number of other birds. Dried ground red peppers, ground black pepper, or chili powder are other repellents that can be dusted on or near flowers. Be aware that some of the repellents designed for mammals may kill non-target beneficial insects, so it is wise to weigh the benefits of the treatment versus the level of acceptable damage before choosing a course of action.
For purchased pesticides, make sure you read and follow the label instructions! The label is the law.
