Lightly fine mist microfiber cloth with water and it will work well and not wet the wood. Once a week will not hurt, don't do this daily. Lemon oil would work well, a small amount on microfiber cloth, do not want to make things oily.

I like Lemon Pledge.

Well, I have to admit, I used the lemon Pledge on a micro fiber cloth, and those blinds look great! I will try a fine mist of water next time, though, so I don't risk build up.

Endust...all I will use after trying them all.

Really wet your hands, and then dry them on your clean dust cloth. Then dust with it. See if that is the answer for you.

Another vote for Endust.

I have always heard that Pledge leaves a build-up on wood furniture.

my sister used pledge on her dining chairs every week,the chairs got this white film you could scrape off with your fingernail,yuk,I use endust I like it,on mop mostly.