Pest control in a brewpub kitchen and grain store

Your malt store is the biggest pest magnet on site

A 1,000 litre brewpub batch uses roughly 200 kg of malt. Most brewpubs keep a few weeks of stock, so there can easily be a tonne or two of grain in a small room next to the kitchen. To a rat that is a pantry. To a weevil it is a nursery.

The insects that matter in a malt store are the stored product pests: grain weevils, flour beetles and the Indian meal moth. They arrive in a sack from the supplier or wander in from a neighbour. Warm, humid Indian weather speeds up their life cycle, so a few beetles in April can be a visible problem by June. Look for webbing on sack seams, fine dust under pallets and small holes in kernels.

Storage rules that make pests hard work

Most pest control is housekeeping. The contractor only handles what the housekeeping misses. In the grain store:

• Keep sacks on pallets, never on the floor. Leave a gap of about 45 cm between the stack and the wall so you can inspect and sweep behind it.
• Rotate stock first in, first out. Write the delivery date on every pallet.
• Sweep spilt grain the same day. A handful of crushed malt under the mill is enough to feed a colony.
• Seal opened sacks or decant them into lidded bins.
• Fit door sweeps and mesh on vents. A gap you can slide a pencil into is enough for a young mouse.

Inspect every incoming delivery before it goes in. A sack with live insects goes back to the supplier, not onto your pallet. Our guide to buying a grain mill and grist case covers keeping the milling area clean as well.

The kitchen needs a different plan

Kitchens attract cockroaches, flies and rodents. The causes are food waste, standing water and warm hiding places behind equipment. Drains are the usual highway. Keep drain covers in place, clean grease traps on a schedule and fix any dripping tap the week it starts.

Bins with lids, emptied at the end of every service, do more than any spray. Spent grain is a special case. Wet spent grain starts to sour within a day in Indian heat and draws flies fast, so it needs to leave the site the day it comes out of the mash tun. Our guide on brewpub layout explains why the spent grain route should not pass through the kitchen.

What a licensed contractor should actually do

Hire a licensed pest control operator on a written contract with a monthly visit as a sensible minimum. A good contract specifies:

• A site map with every bait station and trap numbered.
• Rodent bait stations outside the building and on the perimeter, never loose bait inside food areas.
• Snap traps or glue boards inside, checked on every visit.
• Insect light traps placed away from open food and away from doors, so they do not draw insects in from outside.
• Gel baits for cockroaches in the kitchen, not sprays near food contact surfaces.
• A written service report after every visit with findings and actions.

Fumigation of a grain store, if it is ever needed, is a job for licensed fumigators only. The gases used are dangerous. Nobody on your team should improvise it.

Fruit flies are a brewhouse problem too

The brewhouse floor has its own pest: the fruit fly. Spilt wort, beer drips under taps and a damp drain gully give them everything they need. They are more than a nuisance. Fruit flies carry acetic acid bacteria and wild yeast from one sticky surface to the next, including the outside of a fermenter or an open sample jug.

Hose down spilt wort straight away, flush floor drains with hot water at the end of every brew day and keep drip trays at the bar emptied and washed nightly. If the contractor's light trap near the brewhouse starts filling with tiny flies, look at the drains before you look at the trap.

Records are what the auditor reads

The Food Safety and Standards Authority of India (FSSAI) expects licensed food businesses to run a pest control programme. Inspectors and third party auditors check it through paperwork as much as through a torch. Keep one folder with the contract, the contractor's licence, the site map, every service report and a log of sightings by your own staff.

That sightings log is the part most brewpubs skip. If a cook sees a cockroach at 11 pm on a Saturday, it goes in the log with the time and place. Over three months that log tells you where the problem lives. Our guide to passing a food safety audit goes through the rest of the folder.

Trend the data instead of reacting to it

Every service report has numbers: rodent activity at station 7, five flies on light trap 2. Put them in a simple spreadsheet each month. A station that shows activity three months running points to an entry point nearby. A light trap that catches more every week points to a drain or a waste problem close to it.

This is where we see brewpubs lose control. They file the reports and never compare them. Turning routine records into decisions is the same skill as running costings or a stock take. It is the kind of operating discipline that separates a brewpub that passes audits from one that scrambles before each one.

Common questions

How often should a brewpub have pest control visits?

Monthly visits from a licensed contractor are a sensible minimum for a site with a kitchen and a grain store. Add extra visits if your sightings log shows rising activity.

What insects attack malt in storage?

The common ones are grain weevils, flour beetles and the Indian meal moth. They thrive in warm, humid conditions, so check stock and sack seams more often in summer.

Can we use insect sprays in the brewpub kitchen?

Avoid sprays near food contact surfaces. Gel baits and traps placed by a licensed contractor are safer and are what auditors expect to see.

What records do we need for a food safety audit?

Keep the pest control contract, the contractor's licence, a numbered site map, every service report and your own staff sightings log in one folder.