How can you treat grubs in a lawn without sprays or chemicals?
One way is to purchase a box of parasitic nematodes (very small organisms) and apply them to the lawn. This is a bit trickier than chemical treatment because the nematodes are living creatures. Start off by visiting a garden center with really knowledgable staff, i.e. not Lowe’s or Home Depot. In a good nursery, the nematodes will be fresh and properly stored, so most of them will still be alive (dead nematodes are worthless!). You need to get the right kind; not all nematodes will attack the particular vermin you have in your lawn. If you bring a couple grubs in to the nursery, someone may be able to help you pick the right nematodes. Finally, the nematodes need to be applied in the correct way; they should come with detailed literature telling you how to do this.
