You’ve just spent weeks and a fair bit of money renovating, and the last thing you want to see in your fresh kitchen is a trail of ants. Here’s the honest version: the sweet spot for pest control is after the dust settles but before the furniture arrives — when the house is empty, a technician can reach every gap the renovation just opened up, and the treatment lands on bare floors and skirting instead of around your new sofa. This guide covers why renovated homes attract pests, the right timing, the one job that’s different (termites), and what it should cost.

Why do newly renovated homes attract pests?

A renovation looks like an upgrade to you. To the pests already living in and around the house, it’s an eviction notice and an open door at the same time. Three things happen:

• It disturbs existing nests. Hacking tiles, opening up a ceiling, or digging for new plumbing scatters whatever was quietly living in the walls, soil or roof void into the rest of the house. German cockroaches (Blattella germanica) tucked behind old cabinetry don’t disappear — they relocate.
• It opens new entry points. Every fresh pipe run, conduit and re-tiled wall leaves small gaps. A cockroach needs a 3mm crack; a rat needs about 12mm and will gnaw a small gap wider. New plumbing penetrations under the sink are a classic one.
• It leaves food and shelter behind. Sawdust, cardboard offcuts, cement bags, leftover packing — to ants and roaches that’s a buffet and a hiding spot rolled into one.

On top of that, most renovated homes sit empty for a stretch. No people means no disturbance, which is exactly the calm anything already inside needs to settle in and breed. By the time you move in, a small problem has had a head start. And it’s not only a nuisance — the Ministry of Health Malaysia lists cockroaches and rats among the pests that contaminate food and spread disease, which is reason enough not to let a fresh home sit untreated.

When is the best time to do pest control after renovation?

The timing that works best is a narrow, useful window: after the contractor has finished and cleared their mess, but before you move your furniture in. Here’s why that beats every other moment.

An empty house is the only time a technician gets clean access to every wall edge, corner, pipe entry and skirting line at once. Treat then, let the surfaces dry — usually two to three hours for a general spray — and you move your furniture onto a protected floor instead of over the top of fresh debris and untreated cracks. Do it after you’ve moved in and half the skirting is hidden behind cabinets and the bed, and you’re treating around obstacles, which means a less thorough job and a higher chance of a callback.

The practical order. Finish renovation → contractor clears debris and does a rough clean → book the general treatment while the house is empty → let it dry 2–3 hours → move furniture in. If you’re also doing a deep clean, treat after the clean, not before — you don’t want to mop the residual straight off the skirting.

One more practical note, because it gets asked a lot: don’t scrub or mop right along the wall edges for a week or two after treatment. That’s where the residual sits and where the pests walk. The middle of the floor you can clean as normal. More on that in what to expect after pest control.

Termites: treat before or after the renovation?

This is the one job where the timing flips. For general pests you treat after; for termites, the smart move is before the flooring and cabinetry go in.

A lot of Malaysian renovations and new builds sit on former agricultural or kampung land with active subterranean termites — Coptotermes gestroi and Coptotermes curvignathus are the two species that do the damage here. Once your new parquet, timber skirting and kitchen cabinets are installed, those become the food source. A soil treatment or barrier laid down while the ground and slab are still accessible is far cheaper and less disruptive than tearing out finished work later to do a corrective treatment.

So if your renovation involves new flooring, an extension, or anything that exposes the slab or soil, get a termite inspection in before you close it up. If you’re not sure whether you already have them, the early signs are easy to miss — we cover them in where termites hide in a Malaysian home and what mud tubes on a wall mean.

A homeowner in Setia Alam called us a week after a full kitchen renovation — sugar ants were trailing along the new cabinet line, coming from a gap behind the sink where the old pipe had been resealed. Because the house was still empty, we treated the whole kitchen and skirting in one visit and sealed the gap before the furniture went in. No callback since.

— Job notes, Nomobug field team

How much does post-renovation pest control cost in Malaysia?

For a renovated home you’re usually looking at a general treatment, with termite work priced separately. Rough market rates in the Klang Valley:

The general treatment is the cheap insurance here — a few hundred ringgit while the house is empty, versus chasing an established infestation through a fully furnished home a few months later.