@Ginga Sorry if I'm writing too many comments but the Ant Sprayer isn't a feature like you can pick from a menu. It keeps "ants" from "eating your boosts" when you aren't playing the game, as in the window is closed. When you log back into Kongregate and play the game, it says you have gained X coins and the ants have eaten X% of your boosts. The Ant Sprayer decreases the X%.
I add to Camoraz's suggestion. Make a function called auto-boosts, but make it optional. I suggest putting it in the "Upgr." section. You fill in text boxes or select radio buttons for what percent auto-boosts are bought at and how many auto-boosts are bought at that percentage. You might want to add an option for auto-boosts to only happen in Idle, Anti-Idle, or both.