Posting Study Aid Banner.  Image of river with Aquatic weeds.
 
The pesticide IS applied to water?   BACK
 
The product does NOT have an REI or POSTING?   BACK
 
 
 
You have 1 sign you must post.

You need to post the DNR Sign

This sign has to be 11 x 11 inches and brilliant yellow. It is available from the Wisconsin DNR

WHO: The person who holds the permit to apply is responsible for posting this sign and removing it.

WHERE: Post signs along contiguous treated shoreline and at conspicuous locations to adequately inform the public from both the water and the shore. Posting prior to treatment or of untreated shoreline adjacent to treated areas is at the discretion of the DNR.

WHEN: Many aquatic pesticide labels have specific use restrictions. Signs are to remain up and legible for the required time period stated on the label but in all cases for a minimum of 1 day.
NOTE:

Anytime you apply to waters of the state, the DNR sign will have to be used.

This might be the most common conclusion if you are controlling aquatic plants or applying a larvicide to water.