Do you have an all natural production to spray in the yard to kill ants and ticks? The ants are killing our grass but we dont want the bad chemicals in the yard. We also have a vegetable garden to keep safe.
The ants aren’t killing your lawn but are likely having a feast on the critter that actually are…grubs. You can eliminate the food source by getting rid of the grubs with milky spore, the only organic grub control. More on that HERE. https://blog.timesunion.com/gardening/you-should-treat-for-lawn-grubs-when-there-are-none/7204/
Ticks aren’t so much of a lawn problem, they like to hang out higher up on plants so they can grab onto whatever passé by and brushes against the plants. Controlling then naturally will require a multi-aspect approach that is outlined nicely HERE. https://organicdailypost.com/7-ways-make-yard-hostile-ticks/