Can i leave in nit location in all night to make sure it works. for me and my daughter. or can that be bad for you.

Unclear question: Are you asking about a night light? If yes, a low intensity light, left on all night, will not do any harm. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex, if you have sex.