Originally Posted by El Digital
before you jump on the defensive moral high ground about what the original poster said he was going to do... you ought to consider the likelihood of something going awry, calculated risks of something that could happen, etc...
in this case, let's consider that the original poster was indeed a human.. now consider that as a human, he isn't perfect.. and as someone who isn't perfect, he can't be trusted to 100% of the time keep track of where that bottle is... while it is conceivable he may never have an issue of someone accidently dropping bleach in their eyes, you have to err on the side of caution as that it's not entirely improbably that he could leave it somewhere and just ONCE someone pick it up and just assume it's Visine.
at least mark the bottle up in a manner that would make someone not want to put it in their eyes.... and in fact, it's best that you don't even use bleach. it doesn't work and all they'll do is make you retest, and it'll be THAT much more obvious that you tampered with the sample.
and finally, i really do not advocate the use of marijuana by kids, even ones in high school... i encourage you to rethink your ways and what is really important to you, weed or family?