Statements of Operations (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2012	Jan. 31, 2011
Income Statement [Abstract]
Net Sales	$ 305,364	$ 298,725	$ 914,360	$ 862,882
Cost of Sales	83,320	94,717	261,083	260,482
Gross Profit	222,044	204,008	653,277	602,400
Operating Expenses
Marketing	43,458	38,262	122,236	113,212
General and administrative	88,775	89,574	315,811	298,953
Research and development	23,192	23,005	73,433	71,618
Total Operating Expenses	155,425	150,841	511,480	483,783
Income from Operations	66,619	53,167	141,797	118,617
Other Income
Interest income	263	483	744	1,148
Other income	480	481	1,440	1,441
Total Other Income	743	964	2,184	2,589
Net income before income taxes	67,362	54,131	143,981	121,206
Provision for income taxes	22,993	15,721	48,277	35,186
Net Income	$ 44,369	$ 38,410	$ 95,704	$ 86,020
Weighted-Average common stock outstanding-basic and diluted	14,935,511	14,935,511	14,935,511	14,935,511