First the positive:
Although the powder smells really bad, the odor keeps human nose after spreading limited.
Now the negatives:
Probably the cat feels the same way. After I had scattered the first pack in the grass, the dilemma continued as usual continues. Since I bought two packs, I distributed after about two weeks so the powder again, hoping that the dil ... Kittens (actually I liked so far Cats) so slowly fed up of it has. However, the cat refused to be impressed by it and carry on as before.
Conclusion:
Perhaps affects the "magic bullet" Yes on other surfaces than on grass - I can not judge. I have this problem now times in the lawn and as it acts definitely not. It may not work for other cats and only in this "our". But since I doubt that there is of me (k) a star.
Too bad about the money.
Try it with the lawn sprinkler is triggered by a motion now.
Love cat owners: there are litter boxes and cat litter!