Introduction: Crying and anxiety in an infant are not only a defence reaction informing of a health problem, but also a signal of hunger, fatigue or difficulties falling asleep. There are many methods of reducing a child’s adaptation problems. Various positions, breastfeeding, rocking and contact with the mother’s skin are used. Currently, white noise-emitting devices are increasingly popular. White noise consists of monotonous sounds without volume changes, similar to the sounds of nature (rain, the sea), heard by the child during foetal life (the hum of large maternal blood vessels), which has a calming effect and masks the sounds of external environment. Aim of the study: The aim of the study was to assess the motives, efficacy and correctness of the use of white noise-emitting devices. Material and methods: A survey was conducted among 580 parents who used white noise-emitting devices (Szumiś, Whisbear, applications on personal electronic devices). The survey collected data on the parent population, the prevalence of the method, the reasons for choosing this method to relieve the child’s problems, the device’s efficacy and manner of use and users’ awareness of potential hazards associated with incorrect use of such devices. Results: The results indicate a widespread use of white noise-emitting devices for helping children fall asleep and reducing their anxiety or colic pain, particularly in infants. Parents made a frequent use of these devices and left them switched on for a long time in close proximity to their children. They did not notice any negative effects of their use and would recommend them to other parents. Conclusions: White noise-emitting devices may be helpful in taking care of a restless child. However, they may be recommended by medical professionals provided that they comply with appropriate technical criteria and the rules for their use have been established considering the unknown long-term impact of such devices on the child’s development.