To keep your lawn healthy, you must aerate it periodically. But rental aerators can cost as much as $100 per day, and buying the equipment is not necessarily worth the investment. To avoid the expense, aerate your lawn with a pair of homemade shoe aerators. They will cost you only a pair of old tennis shoes, cheap plastic flip-flops and a few other low-cost items. Aerating your lawn will be as easy as taking a stroll across it.
Purchase cheap foam or plastic flip-flops in your shoe size.
Remove the flip-flops' straps by cutting them away with a pair of scissors.
Use a marker to mark the nails' positions on the top side of the flip-flop. This will largely depend on the size of your foot, but ideally you want two vertical rows of six nails placed at 1-inch intervals. Each row should be 1 inch away from the outside edge of the flip-flop.
Push the nails through the top of the flip-flop where you made the markings (heating the tip of the nails for 30 seconds first will make them slide through the flip-flop much more easily). The heads of the nails should rest evenly on the surface of the flip-flop.
Coat the top of the flip-flop with a layer of quick-drying epoxy. Allow it to dry completely, then add another layer and allow it to dry.
Coat the flip-flop with a third layer of quick-drying epoxy, but this time press it against the sole of your old tennis shoe (align the edges of the flip flop and shoe sole as best you can) and allow it to dry so that it fully adheres to the sole of the tennis shoe.
Repeat Steps 3 through 6 for the other flip-flop and tennis shoe.