Bad idea to use ziplocks for anything related to non-polar solvents and similar. You say they are 'fine' , but based on what, how it looks?
Our eyes are no analytical instrument, and a toxic or at least unhealthy dose of phthalates or other plastic by-products ending in your DMT could easily be there without being visible. Please use glass when handling solvents of the sort, for your own safety. One can easily scrape DMT out of a flat-bottomed pyrex dish with a razorblade.