An assembly comprising: a replaceable refill comprising: a refill body containing a reservoir of fluid to be sprayed; a valve stem in fluid communication with the reservoir; a spray head mounted on the valve stem, the spray head having a spray exit nozzle and an impingement point on an upper surface of the spray head above the spray exit nozzle; a spraying device for spraying fluid from the refill comprising: a housing with a releasably engagable top portion and base portion; wherein the base portion is configured to retain at least a lower portion of the refill body therein and wherein the top portion has a spray opening and holds an actuation mechanism, and wherein the top portion further comprises an alignment means for cooperation with the spray opening wherein alignment is provided to the refill spray head, in use, by a radially-spaced ledge substantially co-axial with the valve stem of the refill, the ledge being provided with an at least partially hollow core to receive at least a portion, in use, of the refill spray head, and wherein the ledge extends downwardly from the top portion toward the base portion such that the ledge adjacent the spray opening extends less than the rearmost part of the ledge that is remote from the spray opening which extends furthermost, the ledge being arranged to contact the impingement point in use and thereby align the refill spray head with the spray opening, wherein the ledge extends downwardly at a substantially constant gradient from the part(s) of the ledge adjacent the spray opening to the rearmost part thereof. a replaceable refill comprising: a refill body containing a reservoir of fluid to be sprayed; a valve stem in fluid communication with the reservoir; a spray head mounted on the valve stem, the spray head having a spray exit nozzle and an impingement point on an upper surface of the spray head above the spray exit nozzle; a refill body containing a reservoir of fluid to be sprayed; a valve stem in fluid communication with the reservoir; a spray head mounted on the valve stem, the spray head having a spray exit nozzle and an impingement point on an upper surface of the spray head above the spray exit nozzle; a spraying device for spraying fluid from the refill comprising: a housing with a releasably engagable top portion and base portion; wherein the base portion is configured to retain at least a lower portion of the refill body therein and wherein the top portion has a spray opening and holds an actuation mechanism, and wherein the top portion further comprises an alignment means for cooperation with the spray opening wherein alignment is provided to the refill spray head, in use, by a radially-spaced ledge substantially co-axial with the valve stem of the refill, the ledge being provided with an at least partially hollow core to receive at least a portion, in use, of the refill spray head, and wherein the ledge extends downwardly from the top portion toward the base portion such that the ledge adjacent the spray opening extends less than the rearmost part of the ledge that is remote from the spray opening which extends furthermost, the ledge being arranged to contact the impingement point in use and thereby align the refill spray head with the spray opening, wherein the ledge extends downwardly at a substantially constant gradient from the part(s) of the ledge adjacent the spray opening to the rearmost part thereof. a housing with a releasably engagable top portion and base portion; wherein the base portion is configured to retain at least a lower portion of the refill body therein and wherein the top portion has a spray opening and holds an actuation mechanism, and wherein the top portion further comprises an alignment means for cooperation with the spray opening wherein alignment is provided to the refill spray head, in use, by a radially-spaced ledge substantially co-axial with the valve stem of the refill, the ledge being provided with an at least partially hollow core to receive at least a portion, in use, of the refill spray head, and wherein the ledge extends downwardly from the top portion toward the base portion such that the ledge adjacent the spray opening extends less than the rearmost part of the ledge that is remote from the spray opening which extends furthermost, the ledge being arranged to contact the impingement point in use and thereby align the refill spray head with the spray opening, wherein the ledge extends downwardly at a substantially constant gradient from the part(s) of the ledge adjacent the spray opening to the rearmost part thereof.