We&#39;re sorry to read about your disappointment with Roundup Weed &amp; Grass Killer4 and appreciate your feedback. <br /><br />To assemble the wand, remove the protective strip from the battery compartment, and you&#39;ll see a little tab sticking out of the back of the sprayer. Now, let&#39;s connect the hose. You&#39;ll see a plug at the end of the hose. Carefully insert it into the cap, either into the spout or the middle of the knob, until you hear a satisfying click. You&#39;ll know it&#39;s in place! You will either flip the spout on the cap or twist the cap, this will depend on what your cap looks like. Flip open the Comfort Wand or Extended Wand until it locks into place. You&#39;ll hear a click, and you&#39;ll know it&#39;s secure. Then twist the nozzle at the end of the wand to choose your desired spray pattern. You&#39;ve got options, so pick the one that works best for you. Before you start spraying, make sure the trigger lock is disengaged. <br /><br />If you need further assistance or have additional questions please contact us. At your earliest convenience, please reach out to us at 866-324-2647 if we can further assist.