A couple of weeks ago my wife and I went camping in Florida and I hung my hammock in the campground. I removed the netting top and went topless for the duration of our trip
I noticed while breaking down camp that the zippers of my hammock were full of sand stuck between the teeth. Now if I had not noticed this and tried to zip the bug netting back on the hammock I would have probably run into a big problem and possibly catastrophic zipper failure. That would suck if it happened on the trail. A simple shake of the hammock removed all the sand, but if I had not noticed it it could have been bad. The zippers I used, taken from $10 Target sleeping bags, were listed on the package as "self-healing" but debris in the zipper teeth is something that I will pay a lot more attention to in the future.