It depends on how much time you have... the thing that will cause mistakes and problems is being up against the clock.
If it needed to be done in a hurry as most would be, id probably say hack off the head arms and legs, into polythene bags and then 3 or 4 binbags for each part and take them down the tip and throw them in the general waste alongside all sorts of other crap.
You either need to make it so undetectable that nobody ever finds it, or if it does get found make the possibility of cross contamination so high they'll never be able to pick out which person did it out of the hundreds that used the tip in that day.
If it needed to be done in a hurry as most would be, id probably say hack off the head arms and legs, into polythene bags and then 3 or 4 binbags for each part and take them down the tip and throw them in the general waste alongside all sorts of other crap.
You either need to make it so undetectable that nobody ever finds it, or if it does get found make the possibility of cross contamination so high they'll never be able to pick out which person did it out of the hundreds that used the tip in that day.