5yr old daughter lying issue..

so as of late we are having a problem with my daughter who has been lying about a lot of things lately. I want to know how to go about explaining that lying isn’t ok. I’ve tried to explain that she needs to just be honest & tell mom and dad the truth. For example- in our home we have a rule of no food on carpeted areas like bedrooms/living room etc.-today we asked her to pick up toys & we found fruit roll-up wrappers half-way hidden under her bed. We had asked her earlier if she had gotten into the fruit roll-ups & she said it wasn’t me-I didn’t touch it. I’m about at wit’s end with what to do. Anyone have some suggestions of any sort that may help or you have tried that could possibly work?