After arrival, the orangutans are medically checked followed by a four-week quarantine. During this time they learn how to eat proper orangutan food. During their captivity orangutans are not fed a natural diet and as a result they often suffer from serious malnutrition. After having finished quarantine they are placed together with fellow orangutans. In this sociable environment they are able to develop their natural behaviours and practice skills they will need in the future. They are given special stimulating material and toys (enrichment) to learn how to cope with and solve the problems they are naturally confronted with in the wild. They are offered leaves and branches in order to learn how to build their nests.
When the animals have sufficiently recovered, they move to the forest school Tembak Lestari, where they can be prepared for their release into the wild.