I purchased 20 of these bottles from MFS. I left a two-star (probably should've been one) review on the product page which stated that they were not child proof and extremely hard to dispense. It was posted and few hours later it was removed. At the very least i hope to accomplish getting an accurate description on the product page to inform future customers that these are not child-proof. Also, these bottles are better suited for RBA dripping, definitely not for filling a tank of any size unless you want to pop a blood vessel or tendon.