I use a 36 inch garden wand for plants in hard to reach area. Water is delivered from reservoir with a RV pump. Submersible pump in reservoir to stir supplements
No i use one as well since my 10 litre (2.6gal) pump sprayer bit the dust. Been looking at battery electric sprayers on wheels like the one below, but worried it wont last long either. So just been sticking with the measuring cup.