the floor contact point must be adjusted so that it is above the line 32 fig2 b6 the laminate of trailing blade 17 with the sponge like material 20 is mounted onto the front and the rear plates of the squeegee frame 13 fig2 b7 the blade 34 which has multiple cavities near its lip and starting at the bend of the trailing blade 17 also may be mounted on both the back and front plates of the squeegee frame 13 fig2 when the squeegee equipment is operated unidirectionally combinations of b1 through b7 depending on the application may be used in cleaning severely uneven floors 23 utilizing a1 through a6 of the foregoing the trailing squeegee 17 wipes cleanly since both trailing 17 and leading 35 squeegee blades maintain good seals between lips and the uneven floors so as to minimize excessive loss of vacuum c1 on one side the blade is bent to the lower area of the front blade 35 to put the cavities 11 on the lower side this area of the blade should be on the inside of the blade the leading squeegee blade 35 must be mounted so that it is curved in the leading direction fig2 c2 on one side the blade is bent to the lower area of the front blade 35 to make some thickness differences on one of the two sides of the front blade.