These little pricks have infested my lawn, I've tried both chemical spray and granules from Bunnings with limited success, anyone got any other ideas?

Flamethrower.

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[COLOR=RoyalBlue][B][I]Titanium Reinforced[/I][/B]
MY00 Impreza WRX | MY11 Liberty GT Premium[/COLOR]

Baythroid? Never tried it, but have heard good things.

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Family Wagon - MY09 Forester XT - Magnaflow Mufflers, Whiteline RSB, 20% Tint, Verso tuned to 199.1HP and 333.9Nm.
Daily Driver - 2008 VW MKV R32 - EVOMS Intake + much more planned!!!

washing up liquid
60ml per 5 ltrs
flood lawn and when its wet tip the bucket of water on the lawan then hit the lawn with a hose on spray. They will come up for air, then pick them up and put them in a jar and thow them in the bin

I'm thinking plastic lawn. This upkeep stuff is getting pointless. Lack of water and pests..Issues.

If the soil is resisting the water the chemicals might be finding it rather difficult to get to the beetles. Good luck with the little buggers.

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MY00 WRX. 89 Prelude. 99 CRV

By the time you see the beetle it is too late, the beetle doesn't do any damage its the lavae that causes the problem. You are just wasteing your money treating the beetle it has already laid the eggs.

From memory you need to treat about 4 weeks before you see the beetle to kill the lavae before it turns to adult stage.

From memory use baycor or baythroid can't remember exactly which one but can do some research and find out if really want.

I have a fantastic method for treating these little bastards, that was passed down the generations from my Italian relatives.

Here's a hint..

^^^
Thats Quality, do like

I don't get it, it appears there is blue collar workers actually working. I can tell from the pixels

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MY93 Impreza GX 1.8L, 0hp, 0nm