If you've ever hosted a Halloween party or been a teenage girl, you know how hard it can be to de-glitter something. Ruin Days knows it, too. The company lets customers send glitter-filled envelopes and spring-loaded glitter bombs to enemies and loved ones alike in an effort to annoy them or win a prank war. An included note explains to the victim that an anonymous person glitter-bombed them in an attempt to irritate them.

Glitter is not the only way Ruin Days attempts to, well, ruin days. It also lets customers send boxes full of sand and poop in a box. The poop may be artificial, but it still looks like the real thing.

No matter what customers send, they can rest assured knowing the package will never be traced back to them. That's because Ruin Days never includes a packing slip, and the return address on the package is one of the company's many P.O. boxes across the country.