From todays national press - how long do these things take to decompose when buried.
Bread 1-2 weeks
Paper towel 2-4 weeks
Newspaper 6 weeks
Apple core 2 months
Cardboard box 2 months
Orange peel 6 months
Banana skin 1 year
Aluminium can 50-100 years
Polystyrene packing 400 years
Disposal nappy 450 years