I quit using them because some don't have lids, like yours, and I was picturing dust getting inside. Other times, the top would fall out of the bottle.

I now re-use a squeeze honey bottle, or a small glass bottle, e.g. a barbecue sauce bottle.

Bugs are a major problem in South Florida, so we keep the vinegars in their original bottles in the pantry. Olive oil is in an open top pour bottle like you describe, but it's also kept in the pantry just to avoid clutter on the countertop.

But I have used the bottles with little hinged tops and don't like them. They tend to jam after a while from all the minute particles of food combined with the oil or vinegar.

These are what I use on my olive oil and nost used varieties of balsamic vinegar. Work very well, never had them jam and I wash every time I refill the bottle.
https://www.amazon.com/Flip-Top-Metal-Liquor-Bottle-Pourer/dp/B001CDV9O0

I have three bottles with pour tops, EVOO, Veg oil and balsamic vinegar. My balsamic bottle has a hinged lid that I bought at an olive oil store in Saugatuck MI several years ago. It works great!

Linda, thanks for the link, I need to order some more.

Thanks, everyone. I will try some flip-top pourers and see how I like them! I also just saw some liquor bottle pourers on Amazon that have little rubber caps, so that's another option if they will fit my bottles.

As to the question about whether bugs can get in, the answer is yes. There's a TV show about failing bars that shows bugs that have gotten into the liquor bottles with pourers. That's a really extreme case of how are you still in business, but apparently it can happen. I would think it would happen more easily without the flip top.

I was given a lovely set for oil and vinegar and it just seemed to make the oil go rancid faster. I have one with a built in handle that I use for liquid dish soap to look pretty on the counter. :) For the oil, like Islay Corbel, I'm fine with the pourer that comes on the bottle and the twist cap. I do try to anticipate, and loosen the cap before getting a hand dirty. :)

Update - after seeing those bottle pourers with the rubber caps on Amazon, I realized I have a ton of little white end caps left over from a wire shelving project. The bigger size fits perfectly. Bingo! And free! (Geez, could that picture be any bigger??!!)

That's perfect, Jane.

Peppi, I got my flip top pourers at the Olive Oil store in Long Grove