One more thing, crickets are notorious for being carriers of pinworms. Usually your lizard would be able to fend them off if it is healthy. Just be more cautious, especially water dragons are WC and probably came with its own load of parasites when you first got him. Deworming has its cons for lizards as well: it is not something you should do unless you have to, like clearing up the original load of worms and then try to prevent future parasites by getting your crickets from a reliable source, even though the risk for pinworms will always be there because they eat each other as well as they are dirty little critters. On top of that, they nip at your lizard when they are not being eaten. You can prevent this by removing or place a small dish of veggies for the crickets to eat so it won't go after your lizard.