98 Accord Key Remote Problems

[foxylady23]

I have 2 original remotes. In the past I had minor problems with them. Having to push buttons a few times to work but recently they stopped working about 90% of the time. One had some very tiny green spots of corrosion on the inside, so i switched to the other one. It is doing the same thing. Had the remote battery checked at wal-mart jewelry and the girl said it was ok. I looked and it was registering well charged if she had it set correctly. Battery is about a year old. I do go to the gulf of mexico a lot so salt air does get on it but never dropped in the water.Is there a test or a way to re-set them or is it possible they both are going bad at same time??
Or is there a part in the car going bad?
Thank you in advance.

[foxylady23]

I forgot to add that the red light on the remote still blinks when buttons are pressed.