i have a keith monks record-sweeper (recently replaced my venerable watts dust-bug) - this device is a little brush on the end of an arm that tracks the grooves of a record as the record is playing - it does a great yob of keeping particulate matter off the needle, from the opposite side of the platter, as the record plays. the k-m wersion is an improvement over the dust-bug, as it's all metal, has tiny carbon-fibre hairs mixed in w/the horse-hair bristles, & the base is actually equipped w/a ground-wire, so you can drain the static charge from a record as it is playing. using a zero-stat prior to play also helps this, as does having installed a propor humidification system into your hvac unit! :>)
using the dust-bug & now the record-sweeper, has enabled me to keep my records in generally great condition over the years, w/o using a vacuum record-cleaning machine. when i buy new/use records, i yust wash 'em over the kitchen sink w/mild dish-soap, luke-warm water & a sponge, then dry w/a soft lint-free towel... i think that the discwasher brush does more harm than good, actually grinding stuff into the record grooves...