Poisons are absorbed through the skin, by the mouth, or by breathing sprays, dusts, or vapours. You or your children can be poisoned if you apply or are present during application of the chemical.Initially lawn are not at all toxic but as soon as the chemical fertilizers increased to be proceed , the toxicity of the land increases which results into dampen land.I agree with one of the review that 30 commonly used lawn pesticides, 19 are linked with cancer or carcinogenicity, 13 are linked with birth defects, 21 with reproductive effects, 26 with liver or kidney damage, 15 with neurotoxicity, and 11 with disruption of the endocrine (hormonal) system.