How to kill predictable infestation easily?

[GalmWing]

I have a very small portion of my map covered by mountain, so infestations always appear in the exact same 4x4 tile area. Is there a way I can kill them without risking my colonists too much?
Like, is it viable to freeze them or burn them to death safely(ish)?

[Astasia]

If you place some wood walls and floors in there then seal off the entrance with a few layers of stone walls/doors, you can burn them with minimal risk. Make a long enough tunnel so you can enter the room without being attacked, and you can make sort of a line of wood floors/walls that leads deeper into the room, sort of like a fuse. Set the end of the fuse on fire then leave the room and lock it. They will get upset very quickly and start digging out, so you need enough layers of stone to keep them inside while the room temperature rises. Most of the bodies and jelly will also burn though, so it's a bit of a waste.

[LYNX Scout]

I put IEDs in the room I keep getting infestations in and ... huh. So far I've been waiting.

*Its like they knoooowww*

[grapplehoeker]

Originally posted by GalmWing:

I have a very small portion of my map covered by mountain, so infestations always appear in the exact same 4x4 tile area. Is there a way I can kill them without risking my colonists too much?
Like, is it viable to freeze them or burn them to death safely(ish)?

Freeze them? Never. Always use fire.
It's good that you know where they'll spawn. That makes managing them so much easier ;)
Seal it up and place a stone door. Set one or two incendiary IED traps in the room and leave it.
If any should manage to dig their way out, have a shooting party or turrets waiting for them.
It will all be over very quickly and it will be effective every time.
Just make whatever repairs are needed, clean up the slime, reset the traps and never worry about it ;)
For example,
https://steamcommunity.com/sharedfiles/filedetails/?id=1556478275

[M.K.]

One incendiary IED per about 10-12 squares of open floor in the room.
The bugs and especially their nests provide ample fuel for the fire.
Stone walls.
DOUBLE stone door, to prevent the burning bugs from escaping by cracking open your door..
.
and. REMEMBER to exclude the room from your home zone, or otherwise disable firefighting. That room's interior will go over 1000C temperature, and any colonist opening the door will get flash-fried.

You need the double door, as they often manage to gnaw through a single granite or even plasteel door before dying. They still die afterwards, but now you have a column of superheated air in your base, that's bad for your base's feng shui. Trust me, double stone door. also double stone walls if you can.

Also.. in late game when the infestations get to immense size, you may want to *increase* the spawn room's size, simply to allow enough floorspace for the 50-ish bugs + 12 nests you will be getting. If the room is physically too small to accommodate the number of spawn, the infestation will spread out radially until it fits, possibly teleporting across solid rock to do so.

[Varenvel The Festive Dinosaur]

Originally posted by GalmWing:

I have a very small portion of my map covered by mountain, so infestations always appear in the exact same 4x4 tile area. Is there a way I can kill them without risking my colonists too much?
Like, is it viable to freeze them or burn them to death safely(ish)?

close it off , put some furniture in , throw molotov and close it off

Eventualy temprature will rise and most of them should die before they break the walls

this is so far most relialable way to deal with infestation , sadly whatever made of food within room and flamable items will be destroyed

still better then losing colonists most of the time

[grapplehoeker]

Originally posted by Varenvel the mildly grumpy drago:

Originally posted by GalmWing:

I have a very small portion of my map covered by mountain, so infestations always appear in the exact same 4x4 tile area. Is there a way I can kill them without risking my colonists too much?
Like, is it viable to freeze them or burn them to death safely(ish)?

close it off , put some furniture in , throw molotov and close it off

Eventualy temprature will rise and most of them should die before they break the walls

this is so far most relialable way to deal with infestation , sadly whatever made of food within room and flamable items will be destroyed

still better then losing colonists most of the time

For the initial event, that's fine. Personally, I'd refer an incendiary launcher over a molotov.
But the op is asking for a repeatable events, in which case tha advice given by myself and others above is the most reliable way to deal with all future events.
In other words, incendiary IEDS are the way to go... no other flammables necessary since the hives and critters themselves are the fuel for the fire ;)

[GalmWing]

Thanks for all the suggestions, it seems I'ld be able to just burn them as long as I have enough walls, I'll give it a go.

[billy]

i used to do extravagant plans to burn them now i just kite them to turrets . With some practice it becomes easy to kite them . Having people popping in and out of doors works to thin them down while kiting.

[M.K.]

Kiting is great, especially if you have a guy with bionic legs. But when their numbers enter the hundreds, it becomes a bit tedious, the line drags too long and splinters off all the time, and as for the turrets, the scene starts to look like those fort assaults in the movie Starship Troopers.

http://dailygrindhouse.com/wp-content/uploads/2015/07/arachnid_rush.png

It's much, much neater to just lock them in a room, throw in a match, and Burn baby Burn.

* I say "hundreds", but I do not know how many insects there were.
I got a "normal" infestation in the mines of my rather rich base, the infestation spilled over into an adjacent Ancient Wonder building, for lack of space to put all the hives.
All I know is that by the time the butchering was done, I had just over 16000 units of insect meat to turn into kibble.

[Eagle_of_Fire]

Originally posted by GalmWing:

I have a very small portion of my map covered by mountain, so infestations always appear in the exact same 4x4 tile area. Is there a way I can kill them without risking my colonists too much?
Like, is it viable to freeze them or burn them to death safely(ish)?

You'd have to tell me if it changed recently, but in the past the easiest way always been to build walls in the "deep mountain" tiles. They never spawn in normal mountain tiles and in the past they could not spawn unless there was some open tiles around.

Another way to managing them in the past was to start building up mining shafts. Similar to what I used to do in Minecraft, only in 2D. Then the insects spawn there, FAR from my base and I just ignore them. They never seemed to spawn anywhere else later on.

[Sel Und Irae]

Originally posted by LYNX Scout:

I put IEDs in the room I keep getting infestations in and ... huh. So far I've been waiting.

*Its like they knoooowww*

They're learning!
... Clever girl!

[Neon]

@GalmWing

Originally posted by GalmWing:

I have a very small portion of my map covered by mountain, so infestations always appear in the exact same 4x4 tile area. Is there a way I can kill them without risking my colonists too much?
Like, is it viable to freeze them or burn them to death safely(ish)?

If you have only this 4x4 area, you can keep temperature there at -20 and infestation will never spawn. You can see spawn locations in dev mode with "draw infestation chance" enabeled.