Gardeners looking for easy to apply and extremely effective fertilizer will love Sunleaves Liquid Guanos. Derived from bats, the Liquid Mexican Guano encourages robust vegetative development and can be applied as either a foliar spray or directly onto soil. For bigger blossoms and juicier fruits, try Sunleaves Liquid Peruvian Seabird Guano, which can also be applied as either a foliar spray or directly onto soil. Both have the active ingredient of kelp extract. It’s also the only liquid guano with a fresh spearmint scent.