Wow, I've never found that many! Whenever I do find 'em, I throw them over the fence to chickens in that yard. I don't really know what they are; they're just chicken caviar. ;o)

Yeah whatever they are, they're up to no good.

A grub is a wannabe and it's really hard to tell just what that creature is going to be. Some adults are not too bad. At any rate, probably removing them is the best choice. They can't bite, so you can pick 'em up. I taught my GK's to do this so they wouldn't be so bug-a-phobic.

Here is a link that might be useful: Grubs

Those guys are up to no good trust me, I have had a history with them.
They eat feeder roots on plants. I have had them eat a pepper plant root down to nothing, next morning the thing just fell over. They also eat bulbs and grass roots. Get rid of them or your plants will pay. Get some 7 granules and sprinkle it were they are and water it in. It will take awhile for the granules to break down and kill the little beasts.

Thank you Campv I have had dead patches in my grass so this might be the problem although I'm hesitant about putting anything in my yard I have a large African Sulcata tortoise that grazes on my grass , And to date my vegetable garden has been organic ..... Although that does not seem to be working ha ha ... Anyway , 7 granules ,does it break down into the soil in other words is it safe for a vegetable garden And my tortoise

I'd be very careful about using this or any other insecticide with a ground -hugging critter like your tortoise. I applaud your efforts to grow organic; keep it up. We have poisoned the earth - and ourselves - with all this chemical crap that we've been assured is 'safe'.

Here is a link that might be useful: Sevin

I would not use the granules anywhere around your tortoise he might eat it. I have used it in the soil of my veggies only when I really needed to. I am not organic but I try not use chem's if I can help it. Maybe if you get on line there is something else you can use on the grass to kill them and not harm the tortoise. I would not of recommended the 7 if I had known.

If grubs are found in grass areas they are probably Masked Chafers. According to UC Davis " Heterorhabditis bacteriophora are commercially available pathogenic nematodes that can effectively control masked chafers."

Here is a link that might be useful: Grub control