Spring time usually means we begin a cycle of lawn care. I am reading "Organic Lawn Care Manual".  I don't know if the lawn care suggestions are good (give me time to try them) but I want to remind pet owners that pets are more susceptible to the effects of chemicals in the lawn.  In the April 2004 Journal of Veterinary Medicine Association a study showed a 5 to 7 times increase in bladder cancer for dogs exposed to chemically treated lawns.   Read and follow the directions carefully on both organic and nonorganic lawn care products. Carefully consider the impact of lawn chemicals on your pets before you use them.