I went to a lyme retreat recently and found myself learning a few things and felt for those who are trying to make there yards and play areas safer for children and less attractive for tics and there carrier, the white footed mouse and the deer mouse. I will give you some pointers.
1. tic eggs need 82% humidity to live and develop into a nymph.
2. You need to keep your lawn mowed so as to not create a safe haven for the deer mice and white footed mice. If the grass is short the mice are more inclined to stay away for predators will pic them off.
3.The short lawn will be much less attractive to tics because it will be dry.
4. Piles of old wet leaves create excellent hatching beds for tics.
5. Wood piles that are not well ventilated should be dry and taken care off.
6. Tall grasses and down trees around your lawn should be trimmed and cleaned.
7. You can use deet on children I believe older than three to repel tics.
8. There is a tic killer you can use on your clothes that will kill a tic supposedly before they get to your hip called PERMETHRIN. You can find this in your nearest sporting goods store.
9. You can purchase a lawn dress that you can spread with a lawn spreader. My bag covered about 10,000 sq. ft. This should be used around your wood piles and around your hedgerows and lawns next to boundaries. I am sure I have not covered all of the tricks of avoiding lyme infested tics in your lawn. Enjoy the out doors and be vigilant in caring for the welfare of your children and yourself. You can trust a mothers words when she says you don't need this problem.