Dental floss recommendations

This is the dental floss I am on my fourth pack!

This is dental floss sold at Daiso.

The difference from other dental floss is that the thread swells up when you use it.

So it seems like food gets out between the teeth better.

True to Daiso style, the price is 1,000 won! It's so cheap, right?

I stock up on it just in case it runs out...