I've had good results with Nolo Bait. I've also gone out with long-handled shears and snipped the buggers in two...very satisfying.

Here is a link that might be useful: probably more than you wanted to know

A dusting of white flour on your roses will kill them. The bug eats the flour and it glues his mouth parts together and he starves to death. Also very satisfying, non-toxic, cheaper than nolo and easier than chasing them with sissors. (I have to admit I like to cut them in half too, hehe) Cheryl

"However, this week I've been battling more holes in my rose leaves and one bush has nearly been decimated by these circular holes."

Could this be leaf cutter bees? They are fond of roses.

Here is a link that might be useful: Leaf cutter bee damage

I have found that, shocking as it sounds, grasshoppers love marigolds in all their incarnations. If you can get some gtowing plants in there, they will drop the roses and go for the marigolds. I tried to grow copper canyon daisies the year I had a grasshopper infestation and they were history. First. Then, everything else got eaten!

I cut them in half as well when I'm out with my shears, I found that giving them a good thumping that knocks them for a loop and squishing them to death works well too! I'll have to try the flour thing, love the thought of them getting their mouths glued shut and starving! lol

That's a good idea for marigolds. I might try that for next year.

Daisy7, it might be leaf cutter bees, the holes sure look like it. I thought that those bees did more damage in early spring. It might be a combination of both.

From what I can see, both leafhoppers and grasshoppers have been having a heyday in my rose bed. It's kind of funny trying to catch the little buggers. I also watched my dog try to catch one today. (A border collie that doesn't herd squirrels, only bugs--funny--except when she gets stung by bees.)