Over the past few weeks we've noticed that all the cats in the family have fleas. This has not been a problem before - they all have flea collars and are treated with drops and we never had issues.
This year, however, the collars and the drops have made zero difference and we're having to use the electric flea comb on them to get them out along with flea shampoo. None of the usual chemicals seem to be working on them!
We've had cats for nearly 40 years and have never had flea problems like this.
Has anyone else had this problem this year with cat fleas?