Less contaminants in your adhesive equals less downtime on your packaging line. Make sure to have your dry adhesive in a sealed container to keep box dust and other plant particles from settling in the glue. Make sure to keep the lid on the glue melter closed.
If you want to go a step further, use an auto feeder that seals the glue melter and the glue container. The auto feeder is safer than having line operators manually fill the glue tank. The burn risk during refill is removed when using an auto feeder.