Sunday is not currently designed to be applied through a sprinkler system.
We've created the pouch and sprayer with a hose connection in mind, and we wouldn't want to steer you in the wrong direction by giving the go-ahead with another setup.
Our main concern with applying Sunday via sprinkler system would be an incorrect dilution rate of the product. Our nutrients require a specific dilution rate and the sprayers we send are customized to your plan and lawn size. All you have to do is plug everything into your hose line and start applying!
Modifying the dilution rate could cause under fertilization, or worse, over fertilization in a particular area, potentially causing harm to your grass.