Why is the lawn patchy?

[kh17]

 

Had lawn put in almost 2 yrs ago. Occasionally had dry patches but usually recovers. Recently had issues with retic which has all been repaired and has good coverage, was fertilised at same time and looked great for a few weeks. Now these patches are back, what causes this? Is it some kind of pest damage? 

[Jewelleryrescue]

Hi @kh17 

You could have lawn beetles etc  

Apply the following product and it will protect your lawn form   many types as  well as the grubs I say this as you have fertilized and your still having problems.

Richgro 2.5kg Lawn Beetle And Grub Killa

https://www.bunnings.com.au/richgro-2-5kg-lawn-beetle-and-grub-killa_p2960335

I/N: 2960335

$23^.33