Do you have any tips for placing pit and fissure sealants without leaving voids in the final restoration?

One new product that is recommended for minimizing voids is the ET 3000 Composite Manipulation Instrument (Brasseler USA). This handpiece-shaped instrument uses a vibrating tip of varying shapes to help eliminate voids and adapt the restoration well to the cavosurface margin. It works well both for placing  pit and fissure sealants and for placement and creation of anatomy of composite restorations.