Eraser A/P Herbicide can be applied if the turf is slightly wet from irrigation or rainfall however there should be no rainfall or irrigation for atleast 6 hrs following the application.
Please review the product label for more information.
The difference between the Eraser A/P and Eraser 41% is that the Eraser A/P has an Agricultural label.
Eraser A/P Herbicide is a glyphosate product. It will still kill your lawn if applied during actively growing seasons. If the lawn is fully dormant there should be no harm.