Quoted from fredsmythson:Supposedly, Novus 2's main ingredient is diatomaceous earth, which is a natural soft rock material that is used in filtration products and polishing products. I remember pouring large cups of diatomaceous earth into our backyard swimming pool when I was a kid. I never knew back then it could also be used for polishing pinball playfields...
I used DE to take down a 4 foot tall ant pile behind our new house. Took a couple weeks but they're cooked now!