Curious if anyone’s tried those magnetic sweepers that attach to mowers? Wondering if they’re actually worth it or just another gimmick...
I’ve been eyeing those mower magnets too, but I keep hesitating. My yard’s not huge, but after the roofers left, I was still finding nails months later—usually right after I’d mowed and thought I was in the clear. I ended up buying one of those rolling magnetic sweepers with wheels, and it picked up a ton, but I still managed to step on a stray one in the grass. Not fun.
Has anyone noticed if the mower-mounted ones actually get stuff out of thicker grass? I feel like unless you’re mowing super low, the nails just hide down in there. Or maybe it depends on the type of grass? Mine’s a mix of fescue and crabgrass, so it’s not exactly a golf course out there.
Also, does anyone else feel like the nails just keep showing up no matter how many times you sweep? I’m starting to wonder if they’re coming from somewhere else, or if it’s just impossible to get them all. Maybe it’s just part of having an older house with layers of repairs over the years.
I’m with you on metal roofs being less of a pain for this. When we did our shed with metal panels, barely any mess compared to the main house. But then again, the noise during rain is a whole different story...
Is there some trick to getting every last nail out of the yard, or is it just wishful thinking?
I feel like unless you’re mowing super low, the nails just hide down in there.
That’s been my experience too. The mower magnets might grab some surface stuff, but anything buried in thick grass or thatch is probably safe from them. I actually had better luck going row by row with a handheld magnet, especially after a rain when the grass laid flatter. Not fun, but I pulled out way more that way than with the mower attachment. Honestly, I think those things are more for big open areas like parking lots, not lumpy backyards with crabgrass and bumps everywhere.
And yeah, old houses seem to be bottomless pits for stray nails... every time I dig for a new plant I find another one.
I’ve noticed the same thing with old properties—nails just keep turning up, no matter how many times you sweep or magnet the yard. I’ve always wondered if aerating the lawn would help bring more of them to the surface, or if it’d just make things worse by pushing them deeper. Has anyone tried that? I’m also curious if anyone’s had luck with those rolling magnets after dethatching, since that seems to flatten everything out a bit.
It’s wild how persistent those old nails can be. I’ve had a similar experience—bought a house built in the 1940s, and I swear the yard is like a time capsule for every fastener dropped since WWII. No matter how many times I run the magnet or rake, I always find more, especially after a rain when the soil shifts a bit.
About aerating, I’ve actually tried it, but honestly, it was kind of a mixed bag. The core aerator did bring up some buried nails and random bits of metal, but it also seemed to push a few deeper depending on where they were sitting. I think it depends on your soil type too—my yard’s pretty compacted clay, so sometimes the tines just move stuff sideways instead of up. If you’re dealing with sandy or loamy soil, maybe you’d have better luck pulling things to the surface.
As for rolling magnets after dethatching, that’s been more effective for me. Dethatching flattens everything out and exposes debris that’s been hiding under the grass layer. The magnet picks up a surprising amount right after that, especially if you go slow and overlap your passes. One thing I noticed is that smaller nails and staples sometimes get missed if there’s still a lot of organic material on top, so it helps to do a quick rake first.
I’ve also tried using a strong handheld magnet for tight spots along fences or near old outbuildings—sometimes you’ll find clusters where an old project got abandoned or hardware spilled decades ago. It’s kind of satisfying in a weird way, but also makes you wonder what else is lurking down there...
If you’re worried about safety (kids, pets), it might be worth doing a few rounds with different tools over a couple weeks. Stuff keeps working its way up over time, especially after heavy rain or freeze/thaw cycles. I wish there was some magic fix, but for now it feels like an ongoing scavenger hunt. At least the rolling magnet makes cleanup less tedious than crawling around on hands and knees.
Yeah, totally get what you mean about the never-ending hunt for old nails. I’ve been through it after we redid our garage roof last year—thought I’d gotten everything, but a month later my kid found a roofing nail by the back steps. It’s like they multiply when you’re not looking.
I’ve had mixed results with aerators too. The plug ones sometimes just shove stuff sideways, especially in heavy clay. I actually had better luck when I waited until after a good soaking rain—seems like the soil loosens up and more stuff works its way to the top. But honestly, even then, it’s still hit or miss.
Rolling magnets are probably the best tool I’ve tried, especially right after dethatching or mowing low. I do disagree a bit on the dethatching part though—I found that if you go too aggressive with dethatching, you end up with so much loose debris that smaller nails just get buried again. A light rake first, then the magnet, seems to work best for me. And yeah, those little handheld neodymium magnets are clutch for tight corners or around raised beds where you can’t roll anything.
Honestly, I wish someone would invent a “nail radar” or something. There’s always that one rusty staple hiding out waiting for bare feet... It’s wild how much old hardware is just lurking under the surface, especially in older neighborhoods.
If you ever do any green roof work or add garden beds, watch out—digging up a new patch always seems to turn up another handful of random metal bits. At this point, I just keep a bucket handy and try not to overthink how many are still down there.