Chemical treatment
The operator applies insecticide to the places bed bugs hide, such as mattress seams, bed frames, furniture joints, skirting and cracks. Many products leave a residue that keeps working for a while after the visit. Because eggs can survive the first application, chemical treatment usually involves follow-up visits. Rentokil notes that bed bugs typically need 2 or 3 treatments (Rentokil Singapore, Pest Control Prices). Pro-Shield, for example, schedules follow-ups 12–14 days apart (Pro-Shield, Bedbug Services (package prices)).
You may need to stay out of treated rooms for a few hours afterwards. Ask the operator for their re-entry time.
Heat treatment
Heaters and fans raise the temperature of the room and its contents high enough to kill bed bugs and their eggs, including inside furniture and mattresses. Four Solutions says the heat process typically takes about 3–5 hours (Four Solutions, Bed Bug Treatment Singapore). Heat leaves no residue, so some operators combine it with a residual spray to deal with bugs that come back from hiding places nearby.
Heat isn't suitable for everything. Some items, such as candles, aerosol cans and certain electronics, have to be removed from the room first.
Side by side
| Chemical | Heat (often with a residual spray) | |
|---|---|---|
| How it works | Insecticide applied to hiding places | Room heated to a temperature that kills bugs and eggs |
| Visits | Usually 2 or 3 (Rentokil Singapore, Pest Control Prices) | Often a single session, with a follow-up check |
| Time on the day | Varies by number of rooms | About 3–5 hours (Four Solutions, Bed Bug Treatment Singapore) |
| Residual effect | Yes, for a period | No, unless combined with a spray |
| Preparation | Clear access to beds, furniture and skirting | Also remove heat-sensitive items |
Indicative prices published by operators
- Chemical, by room: Pro-Shield lists S$280 for 1 room, S$380 for 2 rooms and S$480 for 3 rooms, each with a 12-month warranty, plus a S$20 inspection fee that's credited if you go ahead (Pro-Shield, Bedbug Services (package prices)).
- Heat plus residual treatment: Four Solutions lists from S$600 for 1 bedroom, from S$900 for 2 bedrooms and from S$1,200 for 3 or more (Four Solutions, Bed Bug Treatment Singapore).
- General: Rentokil lists bed bug treatment from S$500 per treatment and notes that insecticide and heat treatments are priced differently (Rentokil Singapore, Pest Control Prices).
- Across providers: KakiList puts chemical or heat treatment at S$250–800 overall, and S$250–450 for HDB flats (KakiList, Pest Control Cost in Singapore (2026), updated Apr 2026).
Prices checked on 26 October 2026 on each company's own website. They're indicative, can change at any time, and aren't quotes. More in the bed bug price guide.
Which one should you choose?
- Small, early infestation in one room: chemical treatment with follow-ups is often enough.
- Several rooms, heavy infestation, or furniture you'd rather not spray: heat, or heat combined with a residual spray, may be worth the extra cost.
- Whatever the method: ask how many visits are included, what the warranty covers, and what happens if bed bugs come back.
How to prepare
Always follow your operator's own instructions. Our preparation checklist covers the basics. In short:
- Bag bedding, clothes and soft items in the affected rooms before carrying them through the home. Dry them on a hot cycle where care labels allow. Four Solutions notes that washing alone may not get rid of bed bugs (Four Solutions, Bed Bug Treatment Singapore).
- Don't move furniture or belongings into unaffected rooms.
- Clear the floor around beds and sofas, and leave space along walls and skirting.
- For heat: remove candles, aerosols, crayons, medicines, plants and anything that could melt or be damaged by heat. Ask about electronics and musical instruments.
- For chemical: plan where everyone, including pets, will be during the treatment and re-entry time.
- Tell the operator about pets, babies and anyone with asthma or allergies.
Not sure it's bed bugs yet? Start with how to tell if you have bed bugs.
Questions
Is heat treatment better than chemical treatment for bed bugs?
Not always. Heat can deal with bugs and eggs in a single session but costs more and leaves no residue on its own. Chemical treatment costs less but usually needs 2 or 3 visits. The right choice depends on how widespread the infestation is.
How many treatments do bed bugs need?
With insecticide, usually 2 or 3, because eggs can survive the first visit. Heat is often a single session, sometimes combined with a residual spray and a follow-up check.
Can I stay at home during bed bug treatment?
You'll usually need to stay out of the rooms being treated, and for chemical treatment, out of them for a few hours afterwards. Ask the operator for their re-entry time.
Related
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- Bed bug treatment: cost and preparation checklist
- How to choose an NEA-licensed pest control operator
- How to tell if you have bed bugs
- Termite treatment for HDB flats
- Subterranean vs drywood termites: how to tell them apart
- Pre-renovation termite treatment: is it worth it?
- Termites in a condo: working with your MCST
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