Test with bacterial cultures: Dangerous germs in the household: There are particularly many hiding in these places

Many germs are harmless to us, but that can change quickly under certain circumstances. Household expert Ramona Mürmann does the test with the Kraus family. Where in your four walls are the most germs hiding?

Many germs are harmless to us, but that can change quickly under certain circumstances. Household expert Ramona Mürmann does the test with the Kraus family. Where in your four walls are the most germs hiding?