@mangeurdenuage @kaia or you could buy some 35% acetic acid
2.5 liters for $35 (idk first site I found)
dilute it to 5% (add 15 liters distilled),
add a teaspoon of dish soap per 500 mL,
put it in a spray bottle
Makes each spray bottle fill about $1 and it'll go a whole lot further than a lemon