Choosing between in-kitchen and underground grease traps - what would you do?

Honestly, I’d go underground if you can swing the upfront cost. The under-sink ones are just a hassle - cleaning them is gross, and if you’re frying a lot, you’ll be dealing with that stink way more often than you want. Plus, losing that cabinet space in a small kitchen is a pain. The outdoor ones are pricey to install, but you barely have to think about them once they’re in.

That said, I’ve seen some folks regret going underground because of surprise plumbing issues or if they ever needed to move it. Have you checked what your local codes require? Sometimes that makes the decision for you, which is annoying but at least takes the guesswork out. Curious if your space even allows for an outdoor install - some spots just don’t have the room.

I totally get the appeal of going underground, especially if you’re dealing with a lot of grease and just want it out of sight, out of mind. The under-sink ones are definitely a pain to clean - I had one in my last place and honestly, I dreaded opening that thing up every month. The smell alone was enough to make me question my life choices.

But I do wonder about the long-term headaches with underground setups. Like, what happens if you get a clog or something goes wrong? Is it a nightmare to fix, or is it just a matter of calling someone out? I’ve heard stories about people having to dig up half their patio because of a leak or blockage, which sounds like a total hassle. Then again, maybe that’s rare and I’m just hearing the horror stories.

Losing cabinet space is no joke either, especially in a small kitchen. I’m always running out of room for pots and pans as it is. But then again, the upfront cost for underground is pretty steep. Did you get any quotes yet? I’m curious how much the price difference actually ends up being once you factor in installation and any permits.

Local codes are such a wild card too. Where I live, they’re super strict about anything that connects to the main sewer line, so sometimes you don’t even get a choice. Have you checked with your city yet? Sometimes they’ll even have recommendations for installers who know the ins and outs of what’s allowed.

It’s a tough call, but it sounds like you’re thinking through all the right stuff. No perfect answer, but at least you won’t be surprised by any of the downsides. Good luck figuring it out - either way, you’ll probably be happier than dealing with that nasty under-sink trap every month.

I’ve seen both setups go sideways, honestly. The under-sink ones are gross, no argument there, but at least you know what you’re dealing with and can get at it with a wrench and some rubber gloves. Underground? That’s a whole different beast. If something clogs or leaks, it’s not just a matter of calling someone - it’s usually a dig job, and those can get expensive fast. I’ve heard of people having to rip up their driveway just to get at a cracked line. Not super common, but it happens more than folks think.

The cost difference is wild, too. Underground installs can run double or triple what an in-kitchen trap costs, especially once you factor in permits and inspections. And yeah, local codes are all over the place. Where I’m at, you basically need a permit to sneeze near the sewer line.

Honestly, if you’re tight on space and don’t want to gamble with future repairs, I’d lean toward the under-sink option - even if it means dealing with the occasional stink bomb. At least you won’t wake up one day to a backhoe in your yard...

I hear you on the backhoe nightmare - had a tenant once who flushed wipes and it backed up the whole underground system. Cost me a fortune and a week of headaches. Under-sink traps are gross, sure, but at least you’re in control. I’d rather deal with a little stink than a big dig.

Under-sink traps are gross, sure, but at least you’re in control. I’d rather deal with a little stink than a big dig.

- 100% agree on the “control” part. Nothing like knowing you can just unscrew a trap and fish out the horror yourself.
- But man, those under-sink ones can get funky fast. I once found a fork, a bottle cap, and what looked like a petrified chicken nugget in one. Still better than renting a backhoe, though.
- Underground traps are outta sight, outta mind... until they’re not. Then it’s wallet pain.
- If you’ve got the stomach for it, under-sink all day. At least you don’t need a shovel.

Undersink traps are definitely the hands-on option, but yeah, they get pretty gnarly. I’ve pulled out gunk that looked like it could walk on its own. Still, I’d rather tackle a stinky mess under my sink than deal with a whole backyard excavation.

If you’re the type who likes to know exactly what’s happening with your pipes (and don’t mind rolling up your sleeves), undersink’s the way to go. Just keep some gloves and a bucket handy - trust me. Quick tip: if you pop it open every few months and give it a rinse, you’ll avoid most horror stories.

Underground traps are quieter... until they aren’t. Once, I had to call in a crew for a neighbor’s backup and the bill was no joke. Plus, you’re at the mercy of whoever installed it last time. I like knowing that if it clogs, I can fix it with a wrench instead of heavy machinery.

All that said, if you’ve got a huge kitchen or run a small business, underground might actually make sense - less frequent cleaning. For most homes though? Under the sink wins for me, even with the occasional mystery object lurking in there.

For most homes though?

I get where you’re coming from, but I actually lean the other way. The “less frequent cleaning” part with underground traps is a big plus for me. I’ve had an undersink one before and yeah, it’s nice to be able to fix it yourself, but the constant maintenance got old fast. With the underground setup, I only have to think about it once or twice a year. Sure, if it clogs it’s a pain, but honestly, I’d rather pay for a pro every few years than deal with gross sludge every couple months. Maybe I’m just lazier than most…

I totally get that. I had an undersink trap in my last place and honestly, it felt like I was always messing with it - never fun after a long day. The underground ones are kind of “set it and forget it,” which is nice if you’re not into regular gross-out sessions under the sink. Only downside for me was the upfront install cost, but after that, it’s pretty hands-off. Guess it depends on whether you’d rather pay with your time or your wallet...

You nailed it with the “pay with your time or your wallet” thing. That’s really what it comes down to. I’ve seen a lot of folks get frustrated with under-sink traps, especially in busy kitchens - nobody wants to be elbow-deep in gunk after a 10-hour shift. The underground ones are definitely less hassle once they’re in, but yeah, the initial price tag can be a shocker.

One thing I’d add: if you’re dealing with a smaller operation or tight space, sometimes the under-sink units are just more practical, even if they’re a pain to clean. I’ve seen people try to squeeze an underground system into a spot where it doesn’t really fit, and that can cause more headaches down the road.

Either way, you’re not alone in weighing these options. It’s always a bit of a trade-off. At least when you finally settle on one, you know exactly what kind of mess you’re signing up for... or avoiding.

I hear you on the “pay with your time or your wallet” thing. That’s basically my whole approach to home projects - if I can save a few bucks by getting my hands dirty, I’ll usually do it, but there are limits. I’ve got an under-sink trap in my kitchen right now, and honestly, it’s not the worst thing in the world to clean... but it’s definitely not how I want to spend my Saturday afternoon. The gunk factor is real.

The underground ones sound great in theory, but when I looked into it, the install cost was way more than I expected. Like, “maybe I’ll just keep my rubber gloves handy” kind of expensive. Plus, I don’t have a ton of space outside for digging or running new lines. Not sure if anyone else has run into this, but the quotes I got were all over the place - some folks wanted to tear up half my patio just to put it in. That’s a hard pass for me.

I get what you’re saying about smaller spaces too. Sometimes you just have to work with what you’ve got, even if it means dealing with a little extra mess now and then. At least with the under-sink ones, you know exactly where the problem is if something goes wrong. With underground, I’d be worried about leaks or clogs that you can’t see until it’s a big issue.

Has anyone actually regretted going with the underground option? Or is it one of those things where you pay up front and then forget about it? I’m always torn between saving money now and avoiding headaches later... but sometimes those “headaches” are just part of owning a house, right?

- Totally get the “pay with your time or wallet” dilemma.
- Under-sink traps: messy, but at least you know where the stink’s coming from.
- Underground? I’ve seen folks regret it when a clog happens - suddenly you’re Indiana Jones digging for lost grease.
- Honestly, unless you’re running a commercial kitchen, the in-kitchen trap is usually less drama.
- Cleaning gunk isn’t fun, but neither is remortgaging the house to fix a mystery leak under your patio...
- Sometimes a pair of gloves and some nose plugs are just part of homeownership.

I hear you on the Indiana Jones bit - once that grease is buried, it’s a whole adventure to fix. I’ve had to snake out an underground trap before and, man, it’s not just the digging, it’s figuring out where the line even runs. In-kitchen traps are gross but at least you can see what’s going on. Unless you’re deep-frying turkeys every weekend, I’d stick with under-sink. It’s way easier to keep tabs on and swap out if needed... just gotta get used to the occasional whiff.

Had an under-sink trap for years - yeah, it’s not the prettiest thing and sometimes you get a whiff, but at least I know what’s going down the drain. Tried to help a neighbor with their buried one once... let’s just say I’m sticking with the easy-access option. Less digging, less mystery.

I hear you on the under-sink trap. I’ve had both types in different houses, and honestly, the buried ones are a pain when something goes wrong. Last winter, I had to dig through half-frozen ground just to clear a clog - never again. With the in-kitchen trap, yeah, it’s not exactly invisible, but at least you can pop it open and see what’s up. If you’re handy and don’t mind a little maintenance now and then, I’d stick with the easy-access route. Less mess, less guesswork.

Buried traps are a nightmare when things go sideways, no argument there.

Last winter, I had to dig through half-frozen ground just to clear a clog - never again.

I hear you on the frozen-finger fiasco - been there, regretted every life choice that led me to that moment. But here’s my thing: in-kitchen traps are way easier to clean, sure, but do they ever NOT smell a little funky? I’m all for convenience, but I also like my kitchen to smell like, well, food and not last week’s stir fry grease. Anyone figured out a way to keep those things from stinking up the place, or is it just part of the deal?

Honestly, I’d take a little funk over digging around outside in the cold. I’ve got an in-kitchen trap and as long as I stay on top of cleaning it, the smell isn’t really noticeable. Maybe it’s just me, but the convenience wins out.

Honestly, I’d take a little funk over digging around outside in the cold. I’ve got an in-kitchen trap and as long as I stay on top of cleaning it, the smell isn’t really noticeable. Maybe it’s just me, but the convenience wins out.

I get where you’re coming from - nobody’s lining up to freeze their fingers off wrestling with a frozen manhole cover at 7am. In-kitchen traps are definitely easier to access, and if you’re diligent about cleaning, you can keep the “funk” to a minimum. Still, I’ve seen more than a few folks get caught off guard when they skip a week or two and suddenly their kitchen smells like a deep fryer’s armpit.

One thing to keep in mind: those smaller, under-sink units fill up fast if you’re running a busy kitchen. If you miss even one cleaning cycle, things can get ugly quick. I once had a call where someone tried masking the smell with air fresheners - let’s just say lemon-scented grease is not an improvement.

On the flip side, underground traps are out of sight (and mostly out of nose-range), but yeah, maintenance is a pain. You need special tools, sometimes even a pump truck if it’s been neglected for too long. But they hold way more and don’t need attention nearly as often.

If you’re running solo or have a small operation, in-kitchen makes sense for convenience. Just don’t let your guard down on cleaning. For bigger places or if you’re prone to forgetting chores (no judgment - I once left my own trap for “just one more day” and regretted it), underground might be worth the hassle upfront.

Either way, there’s no magic solution - just trade-offs between convenience and capacity... and maybe how much “funk” you’re willing to tolerate before breakfast.

I hear you on the convenience, but honestly, I’d rather deal with the cold once a month than have that “deep fryer’s armpit” smell creeping into the kitchen.

if you’re prone to forgetting chores (no judgment - I once left my own trap for “just one more day” and regretted it)