Money. I am serious, the only way is money! The only reason why anyone does anywork is for money & kids are no different. Pay them to mow the lawn, pay them to weed the garden, etc. There are certain chores that my girls have to do & they do not get paid as it is part of being a family. Such as unpacking the dishwasher, feeding the dog, cleaning up after themsleves, etc but all the other jobs should be paid according to ages & how long it takes to do each job.