Personally, I feel that a lot of this has to do with the attitude of runners in road running events. I often come across people that would rather throw the empty sachet in the storm water drain or the veld, than on the road or in the provided bins. These are often also the runners that insist on starting as far forward as possible, even if it means pushing in from the front; yet they walk wihin the first 3km, or put up a huge fight when stopped for traffic, etc. If I use sachets, I will trown them in the bins, if I miss a bin, I will pick the sachet up.
