I had a serious problem last year and almost lost my front lawn to grubs. Thanks to Dolton, there's nothing that we can get in Ontari-ari-ario that will do the job, but I happened to be going to Buffalo last Fall and visited a Home Depot where they still have the good stuff. If you can get there, the grub killer comes in a blue plactic jug that you thread onto your hose. Just turn on the tap and spray. A 2 minute job and it got rid of the grubs 100% Never even had to spray a second time.
If you don't fix your problem they will destroy your lawn and spread to the neighbours as well. And while you're in the Depot, be sure to pick up some Killex for the weeds. One bottle of concentrate should last you for many years. I declared both items to Canada Customs and the guy took the containers and read the labels. It seemed to me that he was looking some (specific) product that might not pass Federal regulations, but after reading the labels he just handed them back to me.
Remember, it's illegal to sell these products in Ontario, but it is not illegal to use them.
Good luck
