Parents, these tools can help when your baby has a fever A 3 in 1 Thermometer gives you the flexibility to take their temperature from their forehead or ear. Plus you can check bottle or room temps Kroger Lubricating Jelly, 4 oz Fred Meyer Natural Medilube Baby Birth and Beyond Can any product be used as lubricant to check a baby's temp rectally? How to take a rectal temperature Taking a newborn's rectal temperature? Safety first! 1 Use a digital thermometer with a flexible tip. 2 Apply a small amount of petroleum jelly. 3 Gently insert no more than