We used K9 advantix last Tuesday we went to the beach Wed. - Fri which include lots of swimming and washing off after swimming. Yesterday I gave him a bath. Somone had told me a while ago that sometimes after lots of water you need to reapply the flea/tick stuff as it won't last the month
And yes here in NC its a year round thing
If it matters he is very short haired single coat but he is at the top end of the weight limit for the dose
thanks