leaks when upside down [SEP] these bottles are well packagedmy dropper doesn t screw on my bottle like i expected it tothe bottles leak a little when tippedthe sprayer works great and gives an even spray across the surfacei added a silicone bottle boot to the bottom of my sprayers so that i could easily identify them and also it helps to prevent me from cracking it when i accidentally hit the edge of my counter with the bottle