Thrip problem
 

Hi good day everyone,

Lately I found out that one of my vandas currently in spike is infested with thrips. Damage is very noticable because buds are already formed and I saw these little pest moving around and out the sheath that covers the bud.

Is it safe to spray these buds with organic pesticide like liquid detergent soap diluted in few liters/gallons of water?
Any recommendation dealing with this?

Thank you in advance.