Table 2.

Mean (±SEM) number of C. formosanus in a paired choice test where tubes were filled with substrate treated with Bacillus thuringiensis strain ATCC 33679 at a concentration of 10⁹ propagules/g, after 24 h exposure

	Number of termites in tubes
Treatment	Treated	Control
Cells
Sand	43.5 ± 15.0a*	66.5 ± 17.1a
Soil	51.6 ± 8.9a	82.0 ± 10.9a
Sawdust	29.3 ± 6.6a	130.8 ± 9.6b
Spores
Sand	32.9 ±14.3a	26.1 ± 6.7a
Soil	70.2 ± 10.6a	77.1 ± 12.2a
Sawdust	65.8 ± 7.3a	70.5 ± 13.8a
50% Cells + 50% Spores
Sand	31.5 ± 4.4a	88.3 ± 12.3b
Soil	41.1 ± 8.4a	60.3 ± 12.6a
Sawdust	66.3 ± 11.9a	66.8 ± 12.0a

* Values with the same letter are not significantly different, P ≤ 0.05.