Table 2. Viable counts of Clostridium difficile in soil from lawn samples using either phosphate buffer solution (pH 7.4) (PBST) or peptone saline (PST), both containing 0.1% Tween 20, as a diluent.

Diluent	Sample (viable count cfu/g of soil)										No. samples positive
	1	2	3	4	5	6	7	8	9	10
PBST	0	0	0	50	50	250	0	0	0	100	4
PST	0	0	0	800	200	100	0	50	0	1200	5