"Environments without the necessary conditions will see very slow decomposition akin to that of non-bioplastics, not fully decomposing for hundreds or thousands

"Environments without the necessary conditions will see very slow decomposition akin to that of non-bioplastics, not fully decomposing for hundreds or thousands of years.[59]" https://en.wikipedia.org/wiki/Polylactic_acid#Degradation https://en.wikipedia.org/wiki/Polylactic_acid#Degradation No mention of its actual life cycle as it turns into a microplastic ie so it should be presumed dangerous in the same ways.