Avery glue stics remain usable for up to 3 years from when they were packaged.
The shelf life for fabric transfers is up to 2 years.
The transfer can still work if the product date exceeds the shelf life, but the results may not be optimal.
One issue with older fabric transfers is that the material can turn a yellowish color over time due to environmental aging. This yellowish effect can show up on the fabric after it is transferred.