Welcome to the forum @Rebster, Grubs can be controlled with beneficial nematodes. Heterorhabditis bacteriophora or Steinernema riobrave varieties, which are completely safe for use around plants, people and pets. These beneficial nematodes kill many other garden pests besides grubs. It may take a week or two to see results after introducing the culture.
If you’re only facing a minor grub infestation, try mixing one part lemon-scented dish detergent with 2 parts water. Spray the soil with this mixture. The lemon detergent irritates the grubs and makes them climb to the surface of the dirt. Then you can hand-remove them and discard.