How do i get rid of these?

[Bay Seeds]

Any advise would be very welcome

[West Coast Vaper]

You gonna have to check the soil for a nest. Other than going nuclear with chemicals we shake all soil off root system of plant and stomp the shit out of those fucks, sorry don't have a name. Soil borer's of a sort that chomp on root systems.

Sent from my DRA-LX5 using Tapatalk

[Bay Seeds]

@DamDave Yeah dude, think that might just have to be done. Shit! Never a dull day

[Nope]

I think it is a grub. I understand they are the beginning stage of some or other beetle. 

[CreX]

get a soil sieve and sieve your soil bro! something with a 0.5cm to 1cm mesh will do the trick really well

i had them in bulk too... nasty fucks in the garden... but are somewhat great in the compost pile with all their chomping and vermipee.

they turn into those yellow and black beetles. Pachnoda sinuata, the garden fruit chafer 

we use a sieve at my dads place quite often to loosen up the compost he wants to use and it is very effective at removing kak in the soils.

otherwise you could go handful by handful until you get through all your useable soil

[Bos]

Fruit chafers are cool in the compost pile as stated by @CreX, they help with breaking down organic material and adding insect frass to the mix. One or two shouldn't be an issue as they normally munch on detritus or rotting organic material, but they are voracious and may chow on living plants and roots if they can't find enough sustenance.

Sifting your compost is about the best way to get them out of the mix.