Just make sure your will is prepared so your cat(s) will go to the proper home for continued love and care. Also make sure to designate money from your estate to their future care.
Overall, I wouldn't be too concerned. With the focus gone the spirits won't be able to get inside due to the presence of felines. You're better off spending your time trying to figure out who got into your house and placed the focus in the first place. You can exclude vampires, and a number of other creatures since they require being invited inside to access your house. I'd probably look at anyone you know that really hates you and/or is a witch doctor.
If you feel the need to do anything to cleanse the space, get some sage (the right kind, there are many types of sage, if you use the wrong one, you are just waving around smoldering dried plants and making your house smell strange), and then perform a ritual in accordance with your faith to restore the spiritual integrity of the house.
I wouldn't do anything strange with the fetish, just make sure to remove it from your property. Using it as an anal suppository or a prostate stimulating object is probably how people end up dead in these kinds of situations.
