Computer related.......

I've been going through keyboards and mouses like water. ANYTHING happens and bam the keyboard and mouse are out. I have the surge protectors and all the safety things. But if anything happens......they are gone. Is this a result of cheap goods or is it something else? I have cordless and my husband has corded. I'm on the net......he isn't. Trying to find a reason for this. 6 mos. at the most and it's time for yet another keyboard and mouse.