Spinosad Maximum Times Per Season

I know bottle says 6 times for tomatoes. Anybody exceed this amount? Anybody know why they limit number of sprays per season?

I use it whenever I see any thrips, caterpillars, or beetles messing with my garden. I regularly mix it with azatrol and hit them with the 'double threat'. It has way better knockdown power for those 3 than just azatrol, or even pyrethrin. I have never worried about spraying it more than 6 times. I spray 2oz./gallon.