Comparison of efficacy of second-generation anticoagulant rodenticides: Effect of active ingredients, type of formulation and commercial suppliers

Figures & data

Table 1. Time to death of rats fed with different commercial rodenticide baits (combination of active ingredient and type of formulation)

Active ingredient	Type of formulation	Commercial supplier’s ID ^1	Number of individuals	Time to death (days)
				Means (± S.E.)^2	Min.	Max.	Median
Difenacoum	Pellets	A	24	5.96 (± 0.3) a	4	10	5.5
Bromadiolone	Wax blocks	A; C; D; E; F	120	5.53 (± 0.1) a	3	11	5.0
Bromadiolone	Pellets	A	24	5.21 (± 0.3) ab	3	7	5.0
Brodifacoum	Grain	B	24	5.21 (± 0.3) ab	3	7	5.0
Brodifacoum	Pellets	A	24	5.13 (± 0.3) ab	4	7	5.0
Difethialone	Pellets	H	24	4.88 (± 0.3) b	3	7	5.0
Difenacoum	Wax blocks	A	24	4.75 (± 0.2) bc	3	8	4.5
Brodifacoum	Wax blocks	A;B	48	4.71 (± 0.2) bc	3	7	4.5
Bromadiolone	Grain	C; F; G;	72	4.69 (± 0.1) bc	3	8	4.0
Difethialone	Wax blocks	H	24	4.17 (± 0.2) c	3	5	4.0

Formulations were ranked from highest to lowest mean time to death of rats.

¹ Each commercial supplier was identified by a capital letter

²Results are means ± standard error (SE). Means followed by different letters differ significantly (p­value< 0.05) on the basis of the least significant difference (LSD) test.

Figure 1. Total bait consumption (average ± standard error) of rats from different commercial suppliers treated with bromadiolone wax blocks and grains. Each commercial supplier was identified by a capital letter.

Figure 2. Average time to death (± standard error) of rats treated with bromadiolone wax block and grain baits. Different letters indicate significant differences between groups (least significant difference (LSD) test, p < 0.05).