Point of lvl up beyond lvl 3 of Herbicide Squirter?

cbre726 wrote:
At level 2 you get 7 per crafting item (fertilizer, corn, DNA) for each mutant Sideshow Bob, up from 4.
At level 5 you get 9 per crafting item.

Presumably this continues to increase linearly by 2 every three levels...

Thanks for the info (it'd be nice if EA would show us this type of info on the upgrade screen itself it would make the upgrade decision easier and make the game play less focused on internet sleuthery) (that's sarcasm directed at EA, thanks for the info cbre 726)