Table 8.

Flea counts 4 h after treatment and weekly infestations (days −2, 2, 7, 14, 21 and 28) with adult Ctenocephalides felis on dogs untreated (C) or treated with a topical (DPP) or an oral (S) ectoparasiticide on day 0

	C4		DPP4		S4
Days	AM	GM	AM	GM	AM	GM
0	70.3	69.3	10.5	6.0a	28.6	16.3a
2	80.9	80.1	2.9	0.8a	22.3	12.a, b
7	77.3	75.8	3.6	1.8a	19.0	11.5a, b
14	73.4	71.2	1.9	1.1a	27.4	17.1a, b
21	81.5	80.2	3.6	2.1a	43.8	33.1a, b
28	76.5	75.0	6.3	3.4a	52.6	49.9b

C control untreated; DPP dinotefuran, pyriproxyfen, permethrin; S spinosad; AM arithmetic mean; GM geometric mean

^aTreated groups (DPP or S) differed from control group (C) (p < 0.05) within each time-point

^bTreated groups differed from each other (p < 0.05) within each time-point