Turtle killers used at Woolies to promote "fun" and sales. Balloons are in the top three most harmful waste items to wildlife. Birds and turtles not only ingest balloons, they actively select them as food. This is because a burst balloon often resembles a jellyfish, the natural food sources of many marine species like turtles.
Ingesting balloons, and the clips and strings attached to them, can cause intestinal blockages and results in a slow painful death through starvation. Marine animals don’t have the gastrointestinal pH levels to breakdown a balloon and for turtles, it may also cause floating syndrome. Trapped gases in the gut can cause a turtle to become buoyant, unable to dive for food—making them vulnerable to boat strikes and leading to starvation and severe dehydration.
Wildlife, both terrestrial and marine, can also become entangled in balloon ribbons or strings, causing injury or death through drowning, suffocation, or an inability to feed and avoid predators.
Even if balloons are disposed of "safely" they go to landfill where it may take up to 1,000 years to decompose, leaching potentially toxic substances into the soil and water. Why are some organisations like this so stubborn in regards to using balloons as "advertising fun?
Even if these balloons are biodegradable, it's greenwash. Natural latex may be biodegradable, but after adding chemicals, plasticizers and artificial dyes, how natural could it be? It may degrade after several years, but it’s surely not “biodegradable.”