my oil filters on my personal car are hand tight and an extra snug. i can remove them with relative ease and have never had one fall off. dont know why you need oil filter wrenches unless
A) you follow specs on how tight to tighten your filter
or
B) your filter is in a shitty awkward spot
btw as far as i know, dumping an emptied used oil filter will reap no penalties from the EPA, dumping any oil, antifreeze, ****** fluid, etc etc will.