Noise might scare some dogs

I have an almost 2 year old standard poodle who looooooves the garden hose. We just moved to AZ ask I figured that this would be perfect for him. We followed the directions to set it up and introduced it to him slowly but when we pressed on the lever the hole where the water coming out made a very high pitch sound as the water came out that scared my dog. He won’t go near it now and we can’t return because we recycled the box. Good idea but I think poorly made

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