Every wonder what to do with those scratched discs that just should be thrown away, how about finding some means to hang them around your waterer. Just out of the reach of the horses. But close enough to reflect the light.
The Birds HATE IT! Now don't go making it look to cheezy but a couble on a piece of PVC and a chain will do the trick. No more poop in the water and keeps some them out of the grain.

In order to reflect sunlight and keep birds away?

This is kind of funny because in the last week I have now found two things to do with these CD's other than just throw them away. The other idea I just seen was to decorate them and use them as ornaments on your tree. Very good idea would never have thought of the reflection keeping away the birds. I wonder though if it could hurt the horses eyes?

Most horses don't gaze up into the sky that I know of, but the flash would have to be so repetitive for it to do some damage.

I tried it for my garden this year and looks like the bird are not even coming close. I put some see down around my garden to see if the little robbers would come out and try and get it and for the most part.. no.

Nice little trick the part is trying to keep it looking nice. I just used 3 and hung them in a straight line with some 20 pound fishing line. I used an old rake. And that seems to look pretty clean.