An eco-container is a set of three containers for the selective collection of used packaging: a yellow container (for plastic and metal packages), a blue one (for paper and cardboard, newspapers, magazines and writing paper) and a green one (for glass packaging). This set can also include a small red container for batteries.
A drop-off site is a large park where used packaging and other types of waste are collected, such as wood, slag from construction and demolition works, household appliances, furniture, mineral and vegetable oils, car batteries, etc. However, not all drop-off sites are prepared to receive the same types of waste, so check what can be delivered where.
And don't forget: eco-containers are not the only way of sorting for recycling purposes!