Naturally control insects! Bonide's 1 pint Pyrethrin Garden Insect Spray is a natural option that uses the active ingredient Pyrethrin (derived from African Chrysanthemum) and can be used until the day of harvest. Protect your garden, lawn, shrubs and flower beds from insect damage. Pyrethrin Garden Insect Spray is safe for most delicate ornamentals, but still strong enough to keep your gardens safe from insect pests. Just mix in 1 to 4 teaspoons per gallon of water to eliminate an array of pests.