Bug Spit on perennials

What's the best way to get rid of these nasty critters in the perennial bed without resorting to pesticides. I hit them with some soapy water yesterday. But our neighbor has an apiary and we get a lot of his bees on our flowers so I would not want to do anything that would harm them.
OTOH, there's bug spit all over my favorite campanula which usually stays full of flowers all summer and on a couple other things I'd really not like to lose. <sigh>
--Jenny
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wrote:

rinse with plain water, these are spittle bugs
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