I rarely get bugs on my indoor plants, however, just last week found a massive mealy bug infestation
on an Anrithum (sp) that was given to me when I was in hospital in July. Luckily, and just by chance, the plant was never near my other house plants. As it is a particular plant that is special, I like, and have not seen around here in my limited travels, rather than discard, I used Bonide Systemic Granules. I also, treated the visible bugs with a Q tip dipped in alcohol. Checked all my other plants...so far, no more bugs.