Red spider mite on indoor grape vine

Red spider mite on the grape vine as its inside and is likely to produce grapes which can be eaten a chemical control is not suitable as the chemicals used to control red sider are quite aggressive and tend to hang around which means they end up in the food chain.
So the best method of control is a biological control method which is release an insect that will eat the red spider mite and its eggs. The best one available at the moment is Phytoseiulus here is a link
https://www.progrow.co.uk/product/spider-mite-control-phytoseiulus-200

Phytoseiulus is a predatory insect that will consume a large amount of spider mites and their eggs. Simply release into your garden and let the games begin! These mites are most effective in a humidity of 50-60% so are most effective in the vegetative stage. Predator insects are also used as part of a prevention strategy to safeguard against pests.