Feed A Mosquito Egg Farming: The Repeatable Boss Route

Eggs in Feed A Mosquito come from exactly one repeatable source: field Boss Mosquitoes. The game's own How-to-play list puts it first — "Fight with Boss Mosquitoes for mosquito eggs" — and every documented playthrough runs the same cycle: bank health at your base, beat a standing boss in the field, carry the larvae it drops back to your plot, hatch and feed it, then walk out and do it again. One player defeats a mosquito, buys a better weapon, goes back and beats it "one more time," and a new, bigger larva drops on the spot. Later in another session, a single high-tier boss drops a whole clutch at once — an epic egg, a mythical and a legendary in one haul.

The loop is the game's intended core, not a launch gimmick: the V2 update added new weapons and a new boss, and even endgame players keep looping bosses for specific rarities ("I need more legendary eggs. This is so easy."). Below is one full cycle you can copy, the rules that make it repeat, and the real gates that decide how many eggs you actually keep.

Before your first run: health is the real currency

Three things make a farm session possible, and one of them matters far more than it first appears:

• A seat at your base. Your plot starts with a life chair. Sitting on it fills your health bar — and that health is your blood, the same pool boss hits drain in the field and your mosquitoes drink when you feed them. Upgrading the seat (chair, then a toilet, bench and better) raises how much you can bank, so it pays for itself in every future run.
• A weapon. The starting hand kills the first-area bosses fine; cash you earn along the way funds everything above it.
• A free egg slot. Fallen eggs only pay off once placed on your plot, so make sure you have room before the haul.

The repeat route, one cycle at a time

1. Sit and bank health comfortably above what your target boss can drain. First-area bosses are lenient; later tiers are not — the housewife mosquito was judged to need "like 500 health... probably a little bit more."
2. Attack a field boss — the mosquitoes standing in the open in each escalating area. (The combat side of each fight is covered in the boss fight guide.)
3. Keep hitting until the health bar at the top of the screen empties. That bar is your success check for every run.
4. Pick up one of the larvae that fall where the boss died. They're shared loot — on a full server you're racing whoever is nearest.
5. Carry it to your base plot and place it down.
6. Wait out the hatch timer and open it. Observed examples: about 7 seconds for a first common egg, 2 minutes for a mid-tier egg, 7 minutes for a mythical, and up to 4 hours for one late-game egg. Robux can skip a timer if you won't wait.
7. Feed the hatched mosquito to 100%. A new mosquito pays only a fraction of its rate — around a tenth — until fully fed: "if it pays 100, it will start by paying 10." An 18-per-second nerd mosquito only reaches that number at 100%.
8. Walk over the green circle at your base to collect the cash. Income is not automatic; you have to step on it.
9. Head back to the field and repeat. There is no one-time claim step: the documented sessions go straight from one kill to the next, and stronger bosses can drop several eggs per kill.

What makes the loop repeat

• The same bosses re-fight. Players deliberately farm repeat targets like the crazy scientist and the housewife, and one re-fight right after the first produced a fresh, bigger larva with no extra step in between.
• Hauls scale up. Late-game boss kills can leave several lootable eggs from a single fight, so one strong run can fill multiple slots.
• Other players' kills are free pickups. Larvae from bosses other players defeated stay lootable on the ground — one player stocked up entirely on kills they didn't make. Servers hold up to seven players, so traffic is limited but the competition is real.
• One caveat on timing: no documented session shows a fixed respawn rule. One late-game transcript mentions "a 5 minute cool down" while collecting eggs but never shows what it applies to, so treat immediate re-fights as observed behavior, not a guaranteed timer.

The five gates on every run

1. Health thresholds. Each boss tier effectively demands a minimum pool, and under-stocked players lose it fast: "every hit he lands on me, my health drains really fast." One player skipped a 2,000-health boss entirely until more seat time closed the gap.
2. Weapon tier. Better weapons are explicitly needed "to be able to face the next mosquitoes," bought with in-game cash along a ladder that runs from a 5,000 shoe-type weapon through the 35,000 broom to a 150,000 baseball bat. See how to get weapons for the full list and route.
3. Feeding drain. Feeding draws on the same health pool, one mosquito at a time, and stronger mosquitoes pull harder — a Kraken paying 4 million per second out-drank even a bought 1-million-health pool. A run that hatches eggs must leave enough blood to actually feed them.
4. Egg competition. Drops are not reserved for the killer — one player guarded a legendary mid-haul with "Don't you dare take that legendary... Look for your own eggs." Grab what you want quickly.
5. Base capacity. Slots fill: "Do we even have enough slots? Okay, let's expand the plot just a little bit," and later, "Our base is full again." Expand the plot (base upgrades) or replace your weakest mosquitoes, or overflow eggs go unused — "everything else is going to go straight to the dungeon."

A sixth condition sits on top of all of them: rarity per run is random. Repeated re-fights of the same boss produced commons and rares between the good pulls ("God, we're still not getting the epic ones"). No drop percentages are documented for any rarity, and no number of runs guarantees one — so plan around volume of runs, not certainty. If you're chasing top rarities specifically, the legendary tier page covers what to aim for.

No documented session provides measured eggs-per-hour or per-boss yield averages either, so any speed claim would be invented — the honest optimization is route discipline: bank enough health, keep a weapon above your target, keep a slot free, and loot what other players leave behind. Keeping the blood pool topped up between fights is the whole game, so it's worth reading the dedicated guide on how to get blood; it never hurts to check the codes page before a long session, either.

What an egg is actually worth

Every egg you farm hatches into a base mosquito that pays cash per second, at its full rate once fed to 100% — the income that funds your weapon ladder and seat upgrades, which in turn unlock the next tier of bosses and bigger hauls. To see every egg kind in the game and what hatches from each one, open the mosquito eggs reference.

Quick answers

Can you farm eggs AFK or automatically? No. Every documented egg came from an active boss kill — sit-and-wait only restores health; it produces no eggs.

Is there a boss respawn timer? None is documented. Immediate re-fights of the same boss are observed, but the only cooldown mention in the evidence ("a 5 minute cool down") never shows what it applies to — don't plan around a fixed timer.

How long do eggs take to hatch? It scales with the egg: roughly 7 seconds for a first common egg, minutes for mid tiers (2 and 7 minutes observed) and hours for some late-game eggs (4 hours observed). Robux can skip the wait.

What decides the rarity you get? Nothing you control has been shown to. Same-boss re-fights produced mixed rarities across runs, so the reliable lever is how many runs you complete, not which boss you pick.