your problem is a result of grubs in the turf.
unfortunately, you can't doing anything about them until May. I live
in Ohio- a place I buy grub treatment stuff from cautioned me that you
must apply at the correct time, which in my area of NE Ohio is USUALLY
between mid May and Memorial Day.
Check with an expert around then- it depends on how warm and how wet or
dry of a spring you have. There is a time window of when you can
effectively treat for grubs- need to get them as larvae come close
enough to the surface, but before they emerge as adult bugs.
Gid rid of the grubs, and you get rid of moles, skunks etc. looking for
You usually have to treat every 3 years or so. I meant to do it this
spring, but got behind and didn't get it done, and guess what? I also
have mole tunnels all over too. It's probably been 4 years since I
also, if you have enough grubs, your turf will also develop large brown
i'm not totally sure, but i think the name of the stuff is trilox or
something like that.
If you live in a somewhat rural area, as i do, go to a grain elevator
and buy a 30# or 40# bag. I found it's cheaper to buy it there than at
the hardware store or Lowes etc.