I have used this and it works well. What its made of shreds the exoskeleton of the flea (or so I was told) and that is how it is killed. I'm not sure how it works for the eggs though. I'm sure if you use it long enough, you'll get them all. You can apply it directly to your cats and around the home but since it has not been approved for reptiles, I would not apply it to your snake or its enclosure as mentioned above. Vacuum well before handling or allowing him on the floor.

And I can assure you that applying and vacuuming this stuff up is a pain. It will take several passes before you get it all out of your carpet. I would advise using a face mask when applying or vacuuming it up. And also, as mentioned above, you can use it as a drink for your cats as a de-wormer. (or so I have been told. I never used it for this purpose.)

I'd give it a 3/5 stars. It works but is a pain to clean up.