Corn gluten meal is one of the best and safest alternatives to chemically-based fertilizers. Discovered by accident, this natural agent is an effective fertilizer and, when applied in the spring, is also a deterrent against pre-emerging crabgrass. Environmentally-conscious consumers and homeowners have an extensive line of organic fertilizers available that are free of chemicals, making them a safe alternative for dogs. Corn gluten and other organic fertilizers can be purchased online, in garden centers and through landscapers that specialize in organic landscaping.
According to the study released by Purdue University, the breeds of dogs that are most susceptible to the toxic ingredients in herbicides and more likely to develop bladder cancer are Scottish terriers, West Highland terriers, beagles and Shetland dogs. "The Journal of the National Cancer Institute" reported in 1991 that there is a link between 2,4-D and malignant lymphoma in dogs.
The chemical toxin 2,4-D is commonly found in herbicides that can cause serious health problems for some dogs. It is widely used in broad-leaf weed killers and was a chief ingredient in Agent Orange, a substance used during the Vietnam War that had detrimental effects on human health, including birth defects, cancer and death.
Even when an organic fertilizer is applied to your lawn, exercise caution when allowing your dog to walk or play on other grasses that may be treated with chemicals. Herbicides or chemically-based fertilizers may be absorbed through the dog's skin, or the dog may lick and ingest the product.