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Title: Very effective
Review: I held off on five stars only because I haven't seen the long-term effect of this. Brought this because I'm so tired of using the water squirt bottles on my newly adopted cat for behavior modification. Soooo pleased to see my cat walk away from the areas I inconspicuously sprayed with the Boundary! I don't have to shout "no" (he ignores me) or use the squirt bottle (lasts 10 seconds till he attempts to get on the area again and again and again). Mission accomplished!
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