The number one piece of advice from the aircraft crew is always wipe down everything. Between flights, it can be difficult to sanitize and clean every seat and tray. Allegedly cleaners only vacuum down the walkway quickly and wipe the bathroom just as fast. So always bring disinfectant wipes and wipe down the tray table, seatbelt, and seat. And never let your babies crawl on the floor; who knows what's lurking there.
It's a safe bet to pack extra cleaning products in your carry-on bag like hand sanitizer, disinfectant, and tissues; to stay prepared, clean, and healthy.