Can Ticks Survive Indoors or in Your Bed?

TickSpot Guide · August 2026

In short: The castor bean tick — the species that is practically always meant — needs very high humidity and dries out in a heated home. It doesn't nest there and doesn't reproduce there the way fleas do. A tick you carry in survives indoors for a while, but it doesn't "colonise" your home or your bed.

Why homes are hostile to ticks

The decisive factor is not the temperature but the humidity. According to the ECDC, Ixodes ricinus requires a relative humidity of at least 80 percent and dries out easily away from a host. That is exactly why ticks sit outdoors in the damp ground layer, under leaf litter and in tall grass — and not on dry, sunny surfaces.

A heated home is far below that level. How long a tick holds out there depends on the actual humidity; figures from a few days up to two weeks circulate in advice articles. We did not find a reliable study on this — the only dependable part is the direction: days, not months, and they die of desiccation.

Ticks in the bed — usually a case of mistaken identity

The worry about "ticks in the bed" is widespread, but there is no reputable source describing the castor bean tick living or reproducing in bedding. It cannot complete its development cycle indoors. As a rule, what lies behind the worry is a confusion with bed bugs or dust mites — those are completely different animals with completely different behaviour.

That doesn't mean a tick never ends up in a bed: one that hitched a ride on clothing or a pet can of course get there and bite too. The distinction matters — a single passenger you brought in is something entirely different from an infestation. Whether a spot you've found is a tick at all is covered in "Tick bite or mosquito bite?".

The one exception: the brown dog tick

One species breaks this rule: the brown dog tick (Rhipicephalus sanguineus). It comes from the Mediterranean region, copes with dry air and can genuinely establish itself in heated homes — in cracks, behind skirting boards and furniture. Since a single female can lay several thousand eggs, this can turn into a real infestation that has to be dealt with professionally.

It almost always reaches Germany via dogs that have travelled back from the south. Anyone who repeatedly finds ticks in their home after a holiday with the dog should have this checked by a vet — that is the case where the species really matters. More on the species: "Tick Species in Germany".

Clothes after a walk in the woods: the dryer beats the washing machine

This is the most practically useful part — and it goes against intuition: washing alone often isn't enough.

• Ticks largely survive a wash at 40 °C. In studies, nearly all the animals came through a 40 °C wash cycle; only at 60 °C did they all die.
• A US study arrives at the same picture: only from a wash-water temperature of about 54 °C were all ticks killed — in cooler "warm washes" around half survived.
• The tumble dryer is the more effective method. At 60 to 70 °C all ticks died. The US health agency CDC recommends putting dry clothes in the dryer for 10 minutes on high heat; if the laundry is damp, it takes considerably longer.

So the practical order is: dry first, then wash — not the other way round. If you don't have a dryer: after time spent in the green, don't put your clothes on the bed or sofa — shake them out and put them straight into the laundry. And above all, check your own body, because that's where the real risk sits.

What really counts

The Robert Koch Institute's recommendation remains unchanged and clear: after spending time outdoors, check your body and remove any ticks you find immediately. Why every hour counts here is explained in "How Long Does a Tick Feed?". Your home, by contrast, is as a rule nothing to worry about.

Sources

• ECDC: Factsheet Ixodes ricinus (requirement of ≥ 80 % humidity)
• Nelson CA et al.: "The heat is on: killing blacklegged ticks in residential washers and dryers", Ticks and Tick-borne Diseases 2016;7(5):958–963
• Dautel H, Gharbi A, Kleier S (2012), studies on the survival of ticks during washing and drying processes (conference contributions, 7th TTP Conference)
• CDC: Preventing Tick Bites (dryer recommendation)
• Baden-Württemberg State Health Office: information sheet on the brown dog tick
• Robert Koch Institute: FAQ Ticks

Important: This article provides general information and does not replace medical or veterinary advice. If you suspect a tick infestation in your home, consult a vet and/or a professional pest-control service.