From Wikipidia: Mortein is an Australian brand of household insecticide. Together with its sister product Aerogard, a popular insect repellant, Mortein has become something of a household name in Australia, owing much in this regard to its cartoonantagonist, Louie the Fly.
Not sure it would up the weight but would hate to think your smoking an insecticide. All the more reason to only smoke your own shit or know who grew your stash. !
it burns weird, and the ash is really weird. but you can tell just by looking at it, it doesnt look normal. the normal crap prayed shit that iv had has way too many crystals, that look like thc,but theres just too many of them.