State Police are urging caution with fireworks this 4th of July holiday weekend. Only sparklers and fountains, which are non-explosive and non-aerial, are legal in Connecticut. Novelty items such as party poppers, snakes, smoke devices and anything that emits a flame are not legal. State Police say a number of house fires and grass fires have been attributed to illegal fireworks. If a fire or explosion caused by legal or illegal fireworks causes injuries or damage, the person responsible could be charged with a criminal offense.