Nature Zone Worm Guard?

[Imperial Geckos]

Has anyone had any experience with this product? You basically dust the food with it...
Link:
http://lllreptile.com/store/catalog...ins-medicines-and-cage-cleaners/-/worm-guard/
You basically dust the food with it...

Also has anyone ever used powdered panacur/safe-guard to dust the insects to de-worm their geckos?

THanks,
Alex