Table 1.

Description of the six premises. Number of dogs and sheep in the six premises and allocation of the dogs into group A (54.5% permethrin and 6.1% fipronil-treated) and group B (sham-treated) and of sheep into group A (1% deltamethrin-treated) and group B (placebo-treated)

	Premise A	Premise B	Premise C	Premise D	Premise E	Premise F
Number of dogs	2	4	10	2	5	7
Group A dogs	1 (50.0%)	3 (75.0%)	7 (70.0%)	1 (50.0%)	1 (20.0%)	2 (28.6%)
Group B dogs	1 (50.0%)	1 (25.0%)	3 (30.0%)	1 (50.0%)	4 (80.0%)	5 (71.4%)
Number of sheep	20	16	20	4	8	12
Group A sheep	8 (40.0%)	10 (62.5%)	12 (60.0%)	1 (25.0%)	2 (25.0%)	7 (58.3%)
Group B sheep	12 (60.0%)	6 (37.5%)	8 (40.0%)	3 (75.0%)	6 (75.0%)	5 (41.7%)