Glyphosate, pets and the backyard: what outdoor living owners should know

Glyphosate is the active ingredient in many widely sold weedkillers, and it is one of the most heavily used herbicides in the world. Because it is applied to crops such as grains and soybeans, traces can turn up in processed foods, including commercial pet food made from those ingredients. Research from Cornell University drew attention to this when it reported measurable glyphosate residues in a range of cat and dog foods. The study did not establish that those levels harm pets, but it prompted many owners to think more carefully about where their animals pick up chemicals, and the garden is an obvious place to look.

Why the backyard matters

For many Australian households, the deck, pergola, lawn and garden beds are where dogs and cats spend much of their day. Weedkillers sprayed along paths, around carport slabs, between pavers or at the base of fences can leave residue on surfaces that paws and noses touch. Pets also groom themselves, so anything on their coat or feet may be swallowed.

Practical ways to reduce exposure outdoors

  • Read the label. Herbicide labels include re-entry and safety directions; follow them closely and keep animals away from treated areas until the product has dried or for the period stated.
  • Design out the weeds. Well-laid paving, sealed joints, edging and mulched beds reduce the need for spraying around decks and verandahs.
  • Try manual or alternative methods. Hand weeding, boiling water on paver cracks and dense planting can control weeds in small areas.
  • Store chemicals securely. Keep containers in a locked cupboard or shed, off the floor and out of reach.
  • Wipe paws. After walks through parks or nurseries that may be sprayed, a quick wipe helps.

Keeping perspective

Regulators such as the APVMA in Australia assess herbicides and set conditions for their use, and scientific views on glyphosate's long-term effects continue to be debated. If you are worried about your pet's diet or possible chemical exposure, a vet is the right person to ask. For more on planning pet-friendly outdoor spaces, browse our guides or the FAQ.