Pet Odor Elimination - Advice needed

[Amanda Williams]

Hello! I am closing on a house Tuesday that has a significant pet odor issue! There have been about 6 dogs, a bird, and other caged animals living there.  It seems like getting rid of the odor can be a significant issue. I am debating whether or not I should consider having it professionally treated.  I would welcome any feedback on products/methods you did yourself that worked AND/OR feedback on hiring a professional to deal with it. Thanks so much!!