Effective, with a few disclaimers
For several years, I planted variegated liriope only to see it decimated by local bunnies. I tried many things that did not help at all: fox statue, human hair, human urine (don't ask). I purchased the ready-to-use Plantskidd product and sprayed about 10 days ago. Thus far, it seems to be effective, although I also have not seen any bunnies around, as I did in past years. The buyer should note that this product has a definite color (dark red, from the blood content) and will affect the appearance of your plants accordingly. Also, the ready-to-use spray instructions say "use within 3 months of opening", which I would not have guessed. So the full bottle that I purchased to protect a handful of plants will mostly go to waste (although, of course, I will recycle the bottle itself).
This definately works!!
After trying almost all repellants on the market I found one that does what it claims, and lasts! I usually do not write many reviews but had to share this best kept secret. IT WORKS! Try it and see, I promise that you will not be disappointed.