Flea treatments or lack of...

[Doowrah]

I haven't treated my Jack Russell since November he seems to have become immune I expect I will need to now it is getting warmer...right?

In theory if he never goes where any other dog has been or otherwise has no contact with other dogs, then he shouldn't get fleas.

If you don't mind dealing with an infestation once it happens, might be worth the risk of no prevention.

He meets other dogs three times a day...amazing really!