Using acetone is much easier. Superglue will dissolve in acetone. May take a few minutes and a few reapplications for the chemical reaction to do its thing. A lot of locksmiths use acetone on locks (home entry locks, padlocks, and bike locks) that vandals decide to put superglue in. Using a light grease in your lock will help prevent superglue from bonding...all you want is a coating that will last longer than a spray oil.

If people don't mind a u-lock with round keys and a bit of weight, can get a good deal on Masterlock's top-of-the-line Force 6 u-locks or their midrange Force 5 locks:
https://www.bikesomewhere.com/bikesom.../193/24230?g=1
https://www.bikesomewhere.com/bikesom...uct/37/193/436

I'm not really impressed by Master locks (other than the pro series), although those are decent prices. As an alternative, if on a budget and need a $30-$40 lock (including shipping).

Here are some alternatives:


Planet Bike Extra Guard has one thumbs down review, but for $15 + shipping, the price is decent for a low end lock that can't be Bic penned.

Planet Bike Super Guard for $25 + shipping. Its not Sold Secure, but it appears to be beefy enough to fend off bolt cutters.

I say shop around online. You can get a name brand lock (Kryptonite or Onguard) for $20 to $30 (plus shipping) on some websites.