I tried this spray on my furniture and the odd thing was it worked on one couch, but not on the other one at all. The ferrets still no matter what I did got into the couch. Yup, I guess this product is not very effective on "HOLES" . It just dawned on me you can't spray a bit "HOLE". Wolfy Please visit: http://www.geocities.com/wolfysluv/ for information on deafness and ferrets: http://www.geocities.com/wolfysluv/deaf.html take a peek at upcomming "so you have allergies": http://www.geocities.com/wolfysluv/allergies.html [Posted in FML issue 3132]