Logic works best when applied in the early spring after the ants have begun to forage. It need only be applied once a year, except for the first year, when a large infestation can be treated again in midsummer. If there are ants in the garden, apply only around the garden's edge. Don't apply any directly on the garden. Also, to minimize drift, don't apply on windy days.
Logic has low toxicity to other organisms, except for aquatic invertebrates and bees.
Make sure not to get any granules on flowers or into wetlands. Most other organisms should be unaffected by it, and it will not bioaccumulate. Top Fleas Spot treatments are the best way to eliminate fleas. To discover areas of flea populations, walk around your yard in white socks. The heat and vibrations from your feet will cause the fleas to jump on your socks.