Question
is there a good grass seed to help fill in your lawn from high traffic form kids &  dogs making a path in the lamw i live in colo springs colo thanks for any help rob

Answer
Robert:

If the grass is worn down by traffic, the only remedy of which I can think is to thicken it by overseeding and fertilizing.  Nothing I know of can replace traffic damaged turf except a walk or artifical turf.

Get started now or when temperatures are favorable.  You probably have to use Kentucky bluegrass, which takes a month to germinate. You can use fescue, which requires two weeks.

Fertilize or topdress with a high quality, professional grade compost at 3/8 inch, one cubic yard per thousand square feet of lawn.

Best wishes.