I am most disturbed by the mylar balloons. I thought I would look up how long it takes for the mylar to degrade but found that it just does not.
What I hadn't thought about is what these balloons do if they come in contact with electrical wires.
In 2007 So. Cal. Edison reports that they experienced 470 blackouts caused by mylar balloon releases.
It is estimated that in California the loss in business and utilities ads up to more than $120 million per year due to mylar balloons.
More important than the inconvenience and financial cost is the cost in lives of marine animals and birds.
There have been several whales found to have died as the result of mylar balloons in their systems. Turtles are fond of the colored plastic in latex balloons and will choose it over food. Ribbons and strings attached to the balloons often tangle and strangle wildlife.
For more information: UK Rivers Network
Clean Virginia Waterways
References: New Canaan Nature Center|LA Times