Tubes and tires

I dunno what it is, but i'm forever fixing puntures, more on my "road" bike and quite often on the mtn bike.

On the mtn bike, i was thinking of using Eskar Armadillo Elite Tires when mine wear out, as they have Aramid stuff to prevent puntures (any good?), but don't really need new tires yet, so was thinking of using slime inner tubes... Do they work and do they mess up your tires when the slime leaks out?

My slicks are 26x1.5, does it matter that the smallest size slime tube is 26 x 1.75?

and yes, if i avoid cycling over sharp stuff, that would help

Si
Check your rim tape, especially around the valve outlet on the road bike. However, if your tyres are in a jocker that's prob it too.

As for MTB punctures....what are they?