Pests & Disease

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Yellowjackets walking straight into my hive at dusk — how narrow should the entrance be right now?

Third year in the North Carolina piedmont, four hives, and the yellowjackets have hit their stride. During the day the guards handle it fine — I watch them tackle a wasp …

SourwoodGrace · North Carolina, US · Pests & Disease · Sep 9, 2026 · ▲ 7 · 💬 4

Apivar strips going in now the honey's off — where in the brood nest, how many strips, and when do I recheck?

Supers came off my five colonies in Devon last week, all extracted, so Apivar is going in this weekend for the first time — I've used thymol the last three autumns and wa…

DevonBees_Em · Devon, UK · Pests & Disease · Sep 8, 2026 · ▲ 11 · 💬 4 · ✅ Solved

Cleaning up my first dead-out (queen failure, not disease) — what's actually safe to reuse?

Found my weakest colony dead this week — the one I'd been watching since the queen went patchy in July. Post-mortem: maybe two hundred dead bees, a little scattered cappe…

VTBeeHannah · Vermont, US · Pests & Disease · Sep 5, 2026 · ▲ 7 · 💬 3 · ✅ Solved

Vespa velutina season is here — how are you monitoring and reporting this autumn?

September in Provence means the yellow-legged hornets have found my apiary again. The secondary nests are at full strength now and the hawking has started — hornets hover…

LavenderSophie · Provence, FR · Pests & Disease · Sep 2, 2026 · ▲ 11 · 💬 4

The top 5 reasons colonies die over winter — and what to do about each one this month

Every spring this forum fills with dead-out posts, and most were decided in September. So here's my list from 22 years and a lot of scraped bottom boards, in order: 1. Va…

GeorgiaWes · Georgia, US · Pests & Disease · Sep 2, 2026 · ▲ 12 · 💬 4

Final mite wash of the season — post your before/after treatment numbers here

Annual tradition, third year running: the end-of-season wash thread. Post your pre-treatment count, what you treated with, and your post-treatment verification wash so we…

MayaBees · Oregon, US · Pests & Disease · Sep 1, 2026 · ▲ 12 · 💬 5

Rotating treatment classes against resistance — my amitraz/thymol/formic/oxalic logic, poke holes in it

Fourteen years in Tuscany, and after watching fluvalinate and coumaphos become expensive placebos across much of Europe, I treat rotation as non-negotiable. My current lo…

MieleMarco · Tuscany, IT · Pests & Disease · Aug 30, 2026 · ▲ 11 · 💬 4

Yellowjackets stripped a dead-out before I got to it — is the drawn comb still safe to reuse?

Quebec, five hives, well, four now. Found a dead-out this week — colony had been dwindling since July and finally gave out, and by the time I opened it yellowjackets had …

QuebecBees · Quebec, CA · Pests & Disease · Aug 28, 2026 · ▲ 9 · 💬 4 · ✅ Solved

Post-treatment verification wash: 9 per 300 before, 2 after — does that count as "worked"?

Finished a full Apiguard course on my worst hive (of five) here in the Willamette Valley and did my verification wash yesterday, three weeks after the second tray went on…

MayaBees · Oregon, US · Pests & Disease · Aug 24, 2026 · ▲ 11 · 💬 4 · ✅ Solved

Second Apiguard tray goes in tomorrow — queen's gone off lay, is that expected mid-treatment?

Six seasons in Flanders and first time using Apiguard (formic every other year until now, fancied a change while temps suit thymol). First tray went on two weeks ago, sec…

BuckfastLinda · Flanders, BE · Pests & Disease · Aug 22, 2026 · ▲ 7 · 💬 3

Wasp pressure peaking here — watching a strong colony vs a weak one handle it very differently

Wasps have gone from background noise to constant siege at my Perthshire apiary this week. Fascinating and grim to watch the difference between colonies. My two strong do…

PerthshireBees · Perthshire, UK · Pests & Disease · Aug 17, 2026 · ▲ 9 · 💬 3

Apiguard finished, recheck wash barely moved — 8 down to 6 per 300. What went wrong?

Pulled the second Apiguard tray last weekend after the full four weeks, waited a few days, then did my recheck wash yesterday. Pre-treatment I was at 8 per 300, now I'm a…

KentishBee · Kent, UK · Pests & Disease · Aug 17, 2026 · ▲ 10 · 💬 4 · ✅ Solved

Neighbour I mentor "doesn't believe in mite counts" — how do you actually win this argument?

Skåne, 8 years. I've been informally mentoring a neighbour two villages over — second season, two hives, lovely guy, completely allergic to monitoring. His position: "the…

SkaneBees · Skåne, SE · Pests & Disease · Aug 15, 2026 · ▲ 9 · 💬 4

Small hive beetle oil tray results, week by week — sharing my counts since installing

Georgia, 22 years, and this is my first season running oil trays under screened bottoms on all eight hives instead of just the worst two. Since folks ask about SHB every …

GeorgiaWes · Georgia, US · Pests & Disease · Aug 13, 2026 · ▲ 10 · 💬 3

"My bees have survived 3 years untreated" — genuinely curious how people weigh this against the drift argument

Not looking for a flame war, genuinely trying to think this through. A guy at our association — decent beekeeper, not a crank — hasn't treated for varroa in three years a…

PerthshireBees · Perthshire, UK · Pests & Disease · Aug 12, 2026 · ▲ 12 · 💬 5

Yellowjacket trap baits — what actually works without catching your own bees?

Texas, four hives. Yellowjacket pressure is ramping up like it does every August and I want traps out BEFORE they get bad, not after. But last year I used a homemade soda…

TexasBeeSam · Texas, US · Pests & Disease · Aug 12, 2026 · ▲ 8 · 💬 4

Day 3 of Formic Pro and there's a pile of dead bees at the entrance plus brood gaps — normal or did I cook my queen?

Third year, four hives in the North Carolina piedmont. Put Formic Pro (2 strips, full dose) on my worst mite hive Saturday evening. Daytime highs have been 84-86F, so ins…

SourwoodGrace · North Carolina, US · Pests & Disease · Aug 10, 2026 · ▲ 11 · 💬 4

Mid-winter down here in Victoria — cluster checks and timing a broodless oxalic, first varroa winter

G'day from the other hemisphere — while you lot argue about dearth feeding, I'm staring at four clustered hives in a Victorian winter. Fifth year, but this is my first pr…

BallaratBees · Victoria, AU · Pests & Disease · Aug 8, 2026 · ▲ 10 · 💬 4

Yellowjackets hammering my weak nuc — traps, reducers, what actually works before they finish it off?

Ontario, second year. My July nuc (5 frames, maybe 3 covered in bees) is under siege — yellowjackets patrolling the entrance all day, diving on returning foragers, and to…

BethsBees · Ontario, CA · Pests & Disease · Aug 6, 2026 · ▲ 9 · 💬 3 · ✅ Solved

Small-cell and foundationless as varroa control — does the evidence actually support it? Skeptic asking honestly

Eight years in Skåne, and every summer the same claim resurfaces at our club: regress your bees to 4.9 mm small-cell (or go foundationless for 'natural cell') and varroa …

SkaneBees · Skåne, SE · Pests & Disease · Aug 6, 2026 · ▲ 14 · 💬 5
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