Today good catch, even got oreo, wonder what present I will receive next time, kind of exciting. This reminds me of the used, bloodied sanitary pad that I saw in my neighbourhood. Report to NEA also no use, done that, at most they come stake-out for 10-15mins and go back write report say didn't notice anything unusual, then update me saying they staked-out but didn't find anything so basically nothing will change. Report to HDB they will most likely refer me to NEA, then back to square one. Call police they will refer me to NEA, then back to square one. So might as well just do nothing since throwing things out of window is so common that nobody cares. Update: I reported to NEA anyway, don't really hope for any change, see how it goes.