Fleas don't like lavender or ceder. I've bought 5 large dog beds and they were all really cheap $19 from costco and they have ceder chips. They are large enough that my pyr is comfortable on them. This is the first summer my jack russell hasn't been infested with fleas (her kidneys are weak so I'm afraid to use anything strong.) Don't really know if the ceder is why we aren't having fleas. As for the lavender, some people say it works. I have been spraying down my husbands and my bed with lavender once a day and Tia sleeps in the bed too??? good luck