Beware a lot of cheaper chinese latex is made with synthetic hardners to make it seem natural, however this type of latex deteriorates within a few years. Latex Gold® has been made since 1910 and will last 30 years Plus.
Although dust mites can not live in natural latex If you have a fitted cover they can live in this, that is why being able to take the cover off and cleaning it every 12 months or so will keep the dust mites away.
Please do not confuse solid pin core natural latex which is the premium product with pillow top latex with springs. Adding springs is a cheaper way to go and sometimes the latex they put in can be as little as 6mm (1/4inch) thick and they still promote them as latex beds.