When you ring a traditional pest controller and ask them to treat for bed bugs, you'll be quoted for a chemical spray programme — typically a residual pyrethroid applied to skirting, bed frames and mattress seams, with one or two follow-up visits a fortnight apart. That residue stays in the home for months. For families with young children, pets, asthma, or anyone pregnant, that is a meaningful exposure to think about.
What heat treatment leaves behind
Nothing. Heat treatment raises the air temperature in the property to a level that kills bed bugs and eggs, holds it for the required time, and then we leave. There is no residue, no off-gassing, no chemical to ventilate. Pets are safe to return the same evening. Children can sleep in their own beds the same night.
Why it matters more for some homes
- Young children spend more time on carpets and mattresses, where spray residue concentrates.
- Pets groom themselves and ingest whatever is on their fur.
- Asthma and respiratory conditions can flare with airborne pyrethroid residues.
- Pregnancy guidance generally recommends avoiding non-essential pesticide exposure.
- Listed and heritage properties cannot tolerate chemical staining on original timber or plaster.
The legal angle
Many modern leases — particularly on managed apartment blocks — restrict the use of chemical pesticides inside the unit. Heat treatment doesn't engage any of these restrictions because nothing is sprayed, fogged or applied to surfaces.
If you're weighing options for treatment and any of the above applies to you, heat treatment is almost always the right call.