So far I've used 4 bottles and found that none of them stay sealed. You can keep twisting until you feel it's snug, but it only takes a slight twist to the other side to completely loosen it. This resulted in many spills. The last straw was that I spilled the contents of the oil on my furniture. Extremely dissatisfied with this product. Also, the straws are too long which causes them to bend when placed inside.
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