Negative Positive
Title: Good, but has a short life...
Review: It's been one month since I purchased the Preventic collars. Our dog was infested with ticks. Within 24 hours the ticks were gone. It was great. However, according to the literature with the package, no new ticks were supposed attach to the dog. That wasn't the case. They did attach, but they would die within 24 hours. So, the ticks were still being brought into the house. Additionally, within 3 weeks the collar had lost its effectiveness. I literally pulled about 40 ticks off of our dog! Not fun. So, I used the second collar. It's working great right now, but how long is it going to last? By the way, the first collar never got wet, so there was no reason for it to lose its effectiveness. I don't know why the collar was uneffective after just 3 weeks. The box had an expiration date of July 2008. I don't mind the cost of using a new collar each month, but they really should last a lot longer than 3 weeks.
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