Car Whistle Attachment
by Jim Kadel
I can attest that these are effective even for smaller animals that dart across roads, like squirrels, rabbits, etc. However, for years of service, they should be applied with a weather proof contact cement (auto or Walmart store) rather than the "sticky tape" that's supplied on them.
Remove the sticky tape by scraping with a pen/hobby knife; then apply weather proof contact cement liberally and press momentarily in place on car. Immediately remove whistle/s and wait 5 or 10 mins while glue sets on both whistle and car. Finally press whistle back in same place.