If you discover ticks in your home, quick action is important—even though most native ticks (such as the common castor bean tick) can only survive for a few days indoors without a host. An exception is the brown dog tick, which is capable of reproducing inside buildings.

Immediate measures: What to do if there are ticks in the house?
Eliminate any ticks found: Do not crush ticks with your bare fingers. The best ways to dispose of them are to stick them onto a piece of tape and fold it over, drown them in high-proof alcohol (or disinfectant), or burn them thoroughly. (Note: Ticks often survive being flushed down the toilet or sink!)
Thoroughly clean textiles and sleeping areas:

Wash worn clothing, blankets, and towels at a minimum of 60°C.
Alternatively, you can place clothing in the tumble dryer on a high heat setting for 10 to 15 minutes—the dry heat reliably kills ticks.
Regularly wash pet bedding and blankets.

Vacuum thoroughly: Thoroughly vacuum carpets, gaps in floorboards, baseboards, upholstered furniture, and your pets’ favorite spots. Dispose of the vacuum bag directly in the outdoor trash afterward (or freeze it first).
Check pets and people: Thoroughly examine all family members and pets for additional ticks, paying special attention to warm areas with thin skin (backs of the knees, groin area, armpits, behind the ears, and the scalp). Prevention: How to keep ticks out of your home

Change clothes after spending time outdoors: Do not remove worn outdoor clothing in the bedroom; instead, take it off in the hallway or bathroom and shake it out outside.
Protect pets: Use effective tick preventatives for dogs and cats (such as spot-on treatments, collars, or chewable tablets from the vet) and brush or inspect the animals after every walk.

Use repellents: Before heading into forests or meadows, apply insect repellent containing active ingredients like DEET or Icaridin to your skin and clothing.
Make your garden less tick-friendly: Keep the lawn short, remove piles of leaves and dead wood near the house, and secure the garden if wild animals (such as mice or hedgehogs) are bringing ticks in.