How much Rosemary do you have?
Roman priests used rosemary as incense in religious ceremonies, and many cultures considered it a herb to use as protection from evil spirits and witches.
For magical use, burn rosemary to rid a home of negative energy, or as an incense while you meditate. Hang bundles on your front door to keep harmful people, like burglars, from entering. Stuff a healing poppet with dried rosemary to take advantage of its medicinal properties, or mix with juniper berries and burn in a sickroom to promote healthy recovery. In spellwork, rosemary can be used as a substitute for other herbs such as frankincense.
Once, I got a spray bottle, went to a Catholic Church, filled the bottle with blessed holy water then, came home, blessed some salt then placed the salt in the holy water and mixed it up. I then used this holy salt water to spray around my home to be rid or negative entities. I know this sounds bizarre but, I think this worked. Burning sage smudge stick also works.
Or, use all three methods, what the heck, better safe than sorry.
Just kidding. Do what works for you. Hope this works out for you. Blessed Be.