Weedmaster vs Brash Vs Rangestar

The label ingredients for these three herbicides are identical - see pics.

 

The label for all three under "Pasture and Rangeland Restrictions:  Do not cut forage for hay within 7 days of treatment."

 

However...

 

Brash and Rangestar's label also reads, "Dry hay and silage - Treated grasses may be harvested for dry hay or silage but do not harvest within 37 days of treatment."

 

Whereas...

 

Weedmaster's label reads:  "Dry hay and silage:  Treated grasses may be harvested for dry hay or silage but do not harvest within 7 days of treatment."

 

What's the deal?  Weedmaster is consistent - harvest for dry hay is allowed after 7 days.  Brash and Rangestar state 7 or 37 days on the same label.

 

Anyone noticed this?  I've got Brash, I'd like to take some hay in less than 37 days after application.

 

Pics of the labels below...

 

Brash

 

Rangestar

 

Weedmaster

 

Weedmaster vs Brash Vs Rangestar