Had the same ... every now and then it's best to call the exterminator. Shouldn't be more than 400 but it's worth it. In inbetween years I use that white powder stuff for outside hills. Ants love these hot dry conditions.
Re: HydroVac Truck Required - Pigeon Lake
LOL I agree ......... I would even look at just renting a little jack hammer if anything to loosen it and away you go. Waaaaay less cost a little more sweat.
I would fence your yard, I put a chain link fence around my entire acreage for that very purpose. Not to keep my dogs in rather the coyotes out!! Do it once and never worry again. Shooting them will be a forever project. Although the sheer pleasure would be fun. You can make a silencer with an...