Choose Your Weapon

Pick your lane, then build it. Every trap plan below ships with a 3D view and a matching 2D blueprint.

▲ UPDATED Thank you to the whole community for the feedback, the builds, and the boots-on-the-ground effort — it's working. The larval-trap builds below have been refreshed with your input: every trap now has a 3D view and a matching 2D blueprint, plus new kiddie-pool & storage-tote builds. Last refit 19 JUL 2026. See the updated traps →

Pick Your Lane

Be honest.

PARA 3B — PICK YOUR LANE (BE HONEST)

Already done the four moves on the home page? Good — now decide how far you're taking it.

Low-Effort Path

NO WEEKLY UPKEEP

Not sure you'll keep a trap going? Then dump every bit of standing water you can, and drop Bti in whatever you can't drain. No water, nothing to maintain, nothing to go wrong.

Committed Path

WEEKLY UPKEEP

Willing to tend it? Build traps for the water you keep — troughs, barrels, low spots. More reach, but a trap is a standing commitment. Skip it and it turns on you (see Resupply).

Haven't found your water yet? Start at Recon Your Land.

How Every Trap Works

Concept of the operation.

PARA 3C — CONCEPT OF THE OPERATION

Whatever it's made of, every trap does the same three things:

Lure

Dark, still, funky water — exactly the foul surface she hunts for to raft her eggs on.

Kill

A Bti dunk makes the water deadly to the larvae — harmless to pets, birds, fish, and you.

Contain

Keep the surface open so she can land and lay — only a coarse guard for safety, never fine window screen, which would shut her out. A screened overflow stops a storm from flushing the larvae loose before the Bti finishes them.

Select Your Platform

Tap any card for its build plans.

PARA 3D — SELECT YOUR PLATFORM (TAP ANY CARD FOR ITS BUILD PLANS)

Do Not Emplace

Restricted siting.

PARA 3E — DO NOT EMPLACE

⚠ RESTRICTED — KEEP TRAPS OUT OF THESE SPOTS

Next to where you sit, sleep, or enter. A trap lures egg-laying females — site it at the edges, not your back door.
Anywhere a small child could fall in. Open water is a drowning hazard. Secure or screen big vessels; keep them away from where little ones roam.
As an animal's only water. Bti is safe in troughs, but the funky lure-water isn't a drink — keep clean water available separately.
In natural water or on land that isn't yours. No creeks, ponds, or wetlands; no public or neighbors' property without permission.
Right by a wellhead or drinking-water supply. Keep fouled-water vessels well clear.
Full blazing sun or wide-open wind. Not unsafe — just weak. Culex want shade; sun-baked traps evaporate and underperform.
In mowing lanes or equipment paths. It'll get clobbered. Put it where it can sit undisturbed.

Every trap needs Bti to actually kill the larvae — head to Resupply for dunks, bits, and where to buy them.