Best way for adding a sprayer

Has anyone had luck with riggin up an autoamtic sprayer? Thought of strapping something like this on since it could fit a push mower & then it is also portable.
http://www.northerntool.com/shop/tools/product_200495838_200495838

This looks like an interesting idea
https://www.fundable.com/naturezap-smartspray-rewards

Would like to be able to control the spray so I only get the weeds. Tired of having the treatment people come out all the time & spraying my path/walkway.

So, you want a push mower to kill your weeds and cut grass in the same time? Nice!
A gallon jug of "weed-be-gone" strapped upside down to the mower with a garden hose connecting the jug with a wash out port on the mower's deck. A small "C" clamp squeezing the hose in the middle for a flow control. Start your mower, full throttle, undo the clamp for a small trickle, watch the mist of a weed killer billowing out with an undulating motion from underneath and start mowing. Is it gonna work...sure it will! With a predictable outcome...I doubt it! :wink: