Someone keeps throwing coffee (I think) at various times during the day. I leave for work at 5 to 6 in the morning, and get back at 1-4 in the afternoon. And when I get home my door is drenched in coffee, I've been to scared to touch so I just clean it off as fast as I can, but it's happening more frequently. They are also breaking the stems of my plants on my porch, but only to the ones on that run along the side of house, there is also no footprints or cups anywhere, just the mess. I need help, I haven't done any spells other than protective ones.
Are you turning to magick as a first option or a last?
If you are feeling unsafe in your own home, magick should not be your first thought, you should be contacting the authorities. After contacting them and making them aware of the situation, you can then try magickal protections.
Just because you can't see footsteps or cups doesn't mean humans weren't involved, they probably just took the cups with them, it is unlikely that someone damaging your property will leave anything to identify them behind, including cups or footprints.
Talk to the authorities, tell them someone is defacing your property and trespassing repeatedly and that you feel unsafe and see what they can do to help, it's the best thing to do for now, maybe if you feel the need to, invest in a security camera on your house to catch the person involved, people are far less likely to do it again if there is a visible camera.