@mstrailerrentals: It’s gonna be a showdown between proven industries and S5 locks. I have two of the proven locks that I’ve used on the other dumpsters and so far they’re not bad. I just hated that I had to buy two separate locking mechanisms, one for the coupler and then one for the bolts. S5 lock it’s one system, which is really nice. But it doesn’t have anywhere to tie up the chains on it. I will say right off the bat, though the padlock that comes with the S5 lock I feel is way superior and easier to use. But the true test will be this winter.