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Messelink GJ, van Maanen R, van Steenpaal SEF, Janssen A (2008) Biological control of thrips and whiteflies by a shared predator: two pests are better than one. Biol Control 44:372–379 Simply hang the sachets on the plant. There is already a hole in the sachet for the predators to exit from, so the sachets do not need opening.
Walzer A, Paulus HF, Schausberger P (2004) Ontogenetic shifts in intraguild predation on thrips by phytoseiid mites: the relevance of body size and diet specialization. Bull Entomol Res 94:577–584Lavadinho AMP (1975) Variation of adult body weight in Sitophilus granarius (L.) from laboratory cultures. J Stored Prod Res 11:33–39 Sabelis MW (1981) Biological control of two-spotted spider mites using phytoseiid predators. Part I: modelling the predator-prey interaction at the individual level. Agric Res Rep Pudoc, Wageningen 910:238–242 McMurtry JA, De Moraes GJ, Sourassou NF (2013) Revision of the lifestyles of phytoseiid mites (Acari: Phytoseiidae) and implications for biological control strategies. Syst Appl Acarol.18: 297–320. https://doi.org/10.11158/saa.18.4.1 Kumari M, Sadana GL (1991) Influence of temperature and relative humidity on the development of Amblyseius alstoniae (Acari: Phytoseiidae). Exp Appl Acarol 11:199–203
Unfortunately due to the 4-week life cycle you cannot store the sachets for later use. Apply the sachets immediately on receipt. Chemical Pesticides Williams MEDC, Kravar-Garde L, Fenlon JS, Sunderland KD (2004) Phytoseiid mites in protected crops: the effect of humidity and food availability on egg hatch and adult life span of Iphiseius degenerans, Neoseiulus cucumeris, N. californicus and Phytoseiulus persimilis (Acari: Phytoseiidae). Exp Appl Acarol 32:1–13 Schausberger P (1999) Predation preference of Typhlodromus pyri and Kampimodromus aberrans (Acari: Phytoseiidae) when offered con- and heterospecific immature life stages. Exp Appl Acarol 23:389–398 Liu S, Lv J, Wang E, Xu X (2017) Life-style classification of some Phytoseiidae (Acari: Mesostigmata) species based on gnathosoma morphometrics. Syst Appl Acarol 22:629–639. https://doi.org/10.11158/saa.22.5.3Ghazy NA, Osakabe M, Negm MW, Schausberger P, Gotoh T, Amano H (2016) Phytoseiid mites under environmental stress. Biol Control 96:120–134
Tixier MS (2018) Predatory mites (Acari: Phytoseiidae) in agro-ecosystems and conservation biological control: a review and explorative approach for forecasting plant-predatory mite interactions and mite dispersal. Front Ecol Evol. https://doi.org/10.3389/fevo.2018.00192 Phytoseiulus persimilis is the most effective Spider Mite predator if applied in the optimum conditions. The predators are supplied in shaker bottles, and should be sprinkled over your infested plants, ideally on areas rife with Spider Mite activity.
Identification
Greco NM, Liljesthröm GG, Cédola CV, Roggiero MF (2006) Effect of prey deprivation on survival and reproduction of Neoseiulus californicus (Acari: Phytoseiidae) females. Acarologia 46:13–19 Ghazy NA, Osakabe M, Aboshi T, Mori N, Amano H (2015) The effects of prestarvation diet on starvation tolerance of the predatory mite Neoseiulus californicus (Acari: Phytoseiidae). Physiol Entomol 40(4):296–303