The 2023 corn crop faced environmental challenges such as drought and late-season rainfall, leading to the production of harmful mycotoxins. Analysis of nearly 450 samples revealed an average of 5.6 mycotoxins per corn silage sample and 4.4 per corn grain sample. The risk of mycotoxins, particularly from the DON group and zearalenone, has increased in the East, posing a threat to dairy cattle health and milk production. The article underscores the importance of regular mycotoxin testing in corn silage and dry corn during storage, as toxin levels can increase over time, impacting dairy cow health and farm profitability.